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S1385894720316144 | Realizing the high brightness solid state lighting with the emission spectra similar to that of sun light is significantly challenged by the inherent deficiency of the luminescence spectrum and thermal robustness in the single sturctured Ce | Effective regulation of Ce YAG ceramics by Sc. substituting in Al. site. High thermal stability 6 loss 150C and high quantum efficiency of 84.2 . Spectral property of ceramics presented a 21nm blueshift and decreased Stokes shift. Tunable optoelectronic performance for ceramic based WLED LD. |
S1385894720316156 | Red emitting carbon dots still suffer from low photoluminescence quantum yield and unclear luminescence mechanism . Group IIIA elements are firstly introduced to improve the QY of RCDs and the QY has been significantly increased from 0.29 to 12.02 1.99 and 1.53 for B CDs Al CDs and Ga CDs respectively . The improvement of QY for RCDs is mainly originated from the formation of C | Group IIIA B Al Ga elements are firstly selected to improve the QY of RCDs by doping. The improvement mechanism of group IIIA elements on QY was investigated. An energy band structure was built to disclose the switchable emission of B doped RCDs. Acid alkaline induced discoloration of B CDs was used for a dual mode anti counterfeiting. |
S1385894720316168 | Antimicrobial nanostructures are expected to be effective alternatives to antibiotics combating the emergence of drug resistance and superbugs . Herein we have developed an intermediate layer conversion strategy to fabricate urchin shaped | Urchin shaped. core shell structures have been prepared for the first time. Au nanorods were coated by urchin shaped Bi. via a hard template engaged polyol method. The. core shell structures exhibited enhanced antibacterial activities. |
S138589472031617X | Catalytic oxidation of methane is critical for exhaust after treatment systems where cold start emissions and lean combustion still pose serious challenges . In this work the effect of support materials on the complete catalytic oxidation of methane over palladium is studied in dry and wet conditions . A series of metal oxides CeO | Development of active and stabile Pd catalyst supported on Zr and Ce promoted SiO. for lean methane oxidation. Addition of Zr and Ce induces the dispersion and reducibility of active PdOx species. The promoted catalyst remained active for 35h of time on stream in aggressive conditions. The Catalyst composition wt of 1.0 Pd Zr. Ce. n Si. is optimal. |
S1385894720316181 | Microalgal growth was inhibited in high strength ammonium wastewater but the actual stress factor and their physiological responses remain to be elucidated . In this study compared to either the total ammonium or pH alone free ammonia concentration clearly exhibited negative correlation with the growth of | Sludge fermentation liquor was used for microalgal cultivation. FA was the real primary stress factor rather than ammonium or pH alone. FA concentrations negatively correlated with algal growth and photosynthesis. Ammonium was removed primarily by algae uptake and evaporation. EPS showed protective behavior of microalgae to ROS produced in high FA. |
S1385894720316272 | Biopolymers with excellent biocompatibility biodegradability and multiple active sites have been widely used in biomedical fields . Currently the unique electronic properties of biopolymers have been continuously exploited for designing wearable implantable and biodegradable electronics . In the view of molecular engineering including molecular design and assembly and structural modification this review provides a comprehensive overview of advanced biopolymers related to energy sensors displays and bionic devices and indicates the important roles of structural modification on tuning device performance . In addition representative printing technologies are discussed to highlight their features in low cost eco friendly and scalable up fabrication of biopolymer electronics . Furthermore the current challenges and future opportunities are prospected to point out how electronic biopolymers will be modified or developed for next generation flexible and wearable bioelectronics . | The performance of biopolymers can be modified via molecular engineering. Modified biopolymers are promising for advanced functional electronics. Biopolymers are featured in low cost eco friendly and large scale fabrication. Future challenges and developments of electronic biopolymers are proposed. |
S1385894720316284 | Surface engineering for the active phase of metal hydroxide species formation in the oxygen evolution reaction catalysts is significant for water splitting reaction in hydrogen fuel generation . Herein we demonstrate the OER efficiently catalyzed by a novel quasi single crystalline cobalt fluoride and reveal its surface structure evolution during the OER process that is instructive for catalysis process understanding and novel catalysts design . Because of strong ionic bonding dissociation driven by the chemical and electrochemical conditions the structural evolution can readily generate such an active phase during the OER process . The X ray photoelectron spectroscopy in situ Raman spectrum and microscopic observation confirm the structure evolution from pure cobalt fluoride to cobalt oxy hydroxide over their surface and the chemical anionic reconstruction induced cobalt oxy hydroxide passive layer formation . The 3D nanoflower nanostructure can efficiently expose more active sites and increase mass transportation by expanding the contact surface to the electrolyte . Remarkably no activation is required to reach stable catalytic performance . It only needs an overpotential as low as 285mV to afford 10mAcm | Surface engineering for the active phase of metal oxy hydroxide species formation. Oxygen evolution reaction catalyzed by a quasi single crystalline cobalt fluoride. Structure evolution from cobalt fluoride to cobalt oxy hydroxide over their surface. No activation required on cobalt fluoride to reach stable catalytic performance. Easy active phase formation driven by the chemical and electrochemical condition. |
S1385894720316302 | Over the past few decades the shortage of water resource has prompted a shift in human concept about waste water from waste to valuable resource . Utilizing wastewater can not only mitigate water scarcity but also provide an opportunity for nutrient and energy recovery further offsetting part of the exploitation of valuable resources . When establishing resource recovery systems of wastewater the implemented technology and materials should be preferentially considered in order to achieve economically feasible and environmentally responsible solutions . The advantages of biochar in cost nutrient retention and pollutant adsorption efficiency endow its possibility for resource recovery . Thus understanding the relationship between biochar and resource recovery is essential to develop the applications of biochar in environment remediation and wastewater utilization . However to this date there is no comprehensive review that establish the relevance between biochar and recycled substance . In this review we aim to evaluate the roles of biochar in resource recovery from wastewater . Recyclable substances with the presence of biochar mainly include components water resource and energy . Viable and effective methods for different recovered targets are classified . In particular through revealing the interrelationship between biochar production methods and recovered substances we try to provide the guideline for biochar selection . The re application and value of recovered substances are also summarized comprehensively . Moreover the current problems existing limitations and promising industrial application value of biochar in resource recovery from water are also put forward . This review can create awareness about the possibility of various options for resources recovery from water with biochar and contribute to further development and demonstration in wastewater treatment . | The roles of biochar in resource recovery from water are overviewed. Resource recovery of components water and energy using biochar are discussed. Efficiency enhancement strategies for resource recovery by biochar are evaluated. The value and practical re application of recovered resources are summarized. The developments of biochar based resource recovery are proposed. |
S138589472031634X | The use of enzymes as biocatalysts for many industrial processes has grown widely . Laccase a versatile oxidoreductase enzyme has been used as a catalyst in a multidisciplinary field . This enzyme can be used for clarification in the food industry in the chemical industry for organic synthesis of pharmaceuticals and dyes in the treatment of pollutants in the textile industry for dyes discoloration and endocrine disruptor removal . It can also be used in the manufacture of biosensors for phenol detection among other applications . In general laccases are capable of oxidizing phenolic compounds and using low molecular weight compounds as a mediator to increase their redox potential . They are capable of oxidizing non phenolic compounds as well . To improve the enzyme properties and to enable its reuse the immobilization of the laccase onto several different types of supports has been done inorganic organic and also hybrids . Unlike other biocatalysts as lipases which are effectively immobilized and already commercialized laccase has on its catalytic site copper atoms that make difficult the stabilization of the final biocatalyst . Based on this characteristic of laccases and the need for making possible its application in potential industrial processes there is a need to find a suitable way to immobilize this enzyme and then enable the commercialization of a stable biocatalyst resistant to process conditions and with a long shelf life . This review summarizes the most recently used support materials in academic studies . Moreover the properties of the final biocatalyst and its application are critically discussed . This work intends to provide the foundation to facilitate the choice of support for laccase immobilization in future works . | Laccase mechanisms of action and immobilization support was critically presented. A comprehensive overview of materials was introduced for laccase immobilization. The most recently used support materials in academic studies was summarized. Foundations to aid the choice of support for laccase immobilization were provided. Bio based materials proved to be a potential alternative to immobilizing laccase. |
S1385894720316351 | Boosting the catalytic ability of nickel sulfide is vital to its further application as a class of promising non noble catalysts for energy environmental applications . In light of the varied structure phase and heteroatom doping effect of nickel sulfide herein we demonstrated the excellent catalysis performance for varied reactions catalyzed by nickel sulfide with N doping and heterostructure construction . Different from the usually used corrosive precursors amidinothiourea and thioacetamide were used as S and N source for the catalysts fabrication and N atom was doped into the catalysts simultaneously during the sulfuration process . The spectroscopic probing and microscopic observation clearly showed the heterogeneous structure and interface formation . Benefiting from the large surface area N doping induced electronic effect and interfacial coupling and synergistic effect between NiS and NiS | Nickel sulfide activity engineering by N doping and heterostructure construction. Catalytic ability for water splitting reaction boosted on N NiS NiS. N NiS NiS. catalyzed urea electrolysis efficiently than its counterparts. Improved ability resulted from hetero atom doping and efficient hetero interface. |
S1385894720316363 | The development of Li ion batteries for the new flexible technologies should also consider environment and safety issues . Therefore this research focused on developing an aqueous water based process for the preparation of free standing CNT free and flexible Li | Free standing and flexible electrodes were prepared with an aqueous route. Mechanical stress on the electrode leads to better penetration of the electrolyte. The ratio of PEG to obtain flexible electrodes depends on its molar mass. PEG polymer chains probably act as spacers between PVA polymer chains. The best electrochemical performances were obtained for PEG 6000 2wt . |
S1385894720316375 | Aqueous Zn ion batteries attract ever growing attention due to low cost high safety and environmental friendliness . Among the limited cathode candidates manganese based oxides stand out owing to large ion channels and multiple valence of Mn . Notably MnO thought to be inactive before actually exhibits high energy densities in AZIBs thus arousing wide interests . Herein the electrochemical behavior of MnO electrode is extensively investigated in ZnSO | Mn. dissolution enabled MnO to be an active cathode for aqueous Zn ion battery. A H. Zn. co insertion mechanism of the as activated Mn. O cathode was proposed. A MnO. scroll configuration was obtained by hydrothermal method. Cycling stability of MnO electrode was greatly enhanced by graphene wrapping. |
S1385894720316387 | The efficient treatment of uranium is an important and challenging issue regarding radioactive wastes management . Adsorbent with high efficacy low cost is urgently needed for alleviating the contamination of U containing wastewaters . To solve these issues we report a series of phytic acid modified Zn Al Ti layered mixed metal oxides Zn Al Ti | Oriented functionalization of Zn Al Ti LMO is performed under different conditions for U VI removal. Adsorption of U VI nearly approaches equilibrium within 200min. The maximum adsorption capacity of U VI by Zn Al Ti. is up to 1486mg g. Adsorption mechanisms are characterized by the strong chelation of PA and U VI . |
S1385894720316430 | Heterobimetallic zeolites have been considered as highly efficient catalysts to reduce nitrogen oxide emissions but economic and sustainable preparation methods have been lacking . This paper presents an economic and sustainable one pot synthesis strategy to prepare the heterobimetallic FeCu SSZ 13 zeolite with high crystallinity via the mesoscale depolymerization reorganization of natural aluminosilicate minerals without the use of any synthetic silicon aluminum and iron containing chemicals . Systematic characterization results reveal that the resultant FeCu SSZ 13M sample has smaller crystallize size larger specific surface area and pore volume lower acid strength and more isolated Cu | Highly crystalline FeCu SSZ 13 was one pot synthesized from natural minerals. Neither silicon aluminum and iron containing chemicals were used. The synthesized zeolite has small crystallize size and large specific surface area. More iron and copper species are incorporated into the framework of FeCu SSZ 13. The resultant FeCu SSZ 13 shows outstanding catalytic performance in NH. SCR. |
S1385894720316442 | Znair batteries have been considered to be promising candidates for the next generation of energy storage devices . The sluggish kinetics of the oxygen reduction and oxygen evolution reactions at the air cathode are the key obstacles that limit the power output and energy efficiency of ZABs and thus it is important to develop bifunctional electrocatalysts that present high activity for both the ORR and OER long durability and low cost . Perovskite oxides hold great potential for fabricating air cathodes owing to their high intrinsic electrocatalytic activity facile synthesis and great compositional and structural flexibility . Herein we briefly overview the development of perovskite oxides for ZAB applications . The fundamentals of ZABs and OER ORR pathways of perovskite oxides are introduced . Strategies for activity tuning are also provided followed by the mechanistic explanation and experimental methods of catalyst fabrication . Moreover ZAB performance examples are also listed for convenient comparison . Lastly remaining challenges and possible future directions of perovskite oxide based air cathodes are discussed . | Fundamentals of oxygen evolution reduction electrocatalysis on perovskite oxides. A critical review on the electrocatalytic activity tuning strategies. Advances of perovskite oxide electrocatalyst fabrication methods. Application of perovskite oxides as air cathode of rechargeable Zn air batteries. |
S1385894720316454 | Fiber shaped supercapacitors are considered to be one of the most promising power source candidates in flexible electronics for their light weight high flexibility and wearability . Here inspired by natural silkworms spinning and their hierarchical fiber structure we present a multi channel co flow microfluidic strategy for one step spinning of multicomponent carbon nanotubes microfiber supercapacitors . By injecting polyurethane and CNTs dispersed solutions into the microfluidic channels respectively microfibers with single or double CNTs cores and PU shells could be continuously generated . These microfibers were also with highly tailorable structures shapes and sizes of their encapsulated multicomponent CNTs cores through varying parameters such as microfluidic chip designs flow rates and channel sizes . We have demonstrated that the resultant CNTs microfibers showed good flexibility stability and cycle life performance for energy storage capacity through various electrochemical tests . Meanwhile the practical application of CNTs microfibers in powering LED lights has also been successfully studied . Thus we believe that these fiber shaped CNT supercapacitors would reveal important utility in electronic applications which requiring flexible electronic systems . | Bioinspired multicomponent carbon nanotube microfibers have been produced. The structure shape and size of these microfibers are tailorable. These microfibers show good flexibility stability and cycle life performance for energy storage capacity. |
S1385894720316478 | The combination of catalysis with non thermal plasma is a promising alternative to thermal catalysis . A dielectric barrier discharge reactor was used to study plasma catalytic dry reforming of methane at ambient pressure and temperature and a fixed plasma power of 45W . The effect of different catalytic packing materials was evaluated in terms of conversion product selectivity and energy efficiency . The conversion of CO | The plasma was found to activate the dry reforming mixture at ambient conditions. A CO. and CH. conversion of 22 and 33 was achieved respectively. A large variety of hydrocarbons and oxygenated compounds was detected. Methanol was the fifth most selective compound formed. SEM EDS revealed migration of electrode material onto the surface of the packing material. |
S138589472031648X | With a view to the rapid development of pulsed power capacitors the demands for higher energy density energy efficiency and stability have increased significantly . A large amount of research has been devoted to the energy storage field of dielectric ceramics however scientific and effective strategy to design novel materials with excellent energy storage performance is still lacking . In this work a new guideline was proposed that higher energy density and efficiency are easier obtained in crossover relaxor ferroelectrics which is between normal ferroelectrics and relaxor ferroelectrics . Based on this theory a series of lead free 1 | A new theory named crossover relaxor ferroelectrics were reported. Crossover relaxor 0.9BBNT 0.1SSN ceramic processes high. of 2.02J cm. and. of 90.18 at 206kV cm. 0.9BBNT 0.1SSN ceramic exhibits strong chemical and electrical uniformity. The excellent thermal stability frequency stability and cycle life stability have been achieved in 0.9BBNT 0.1SSN ceramic. |
S1385894720316508 | Solar desalination is one of the most sustainable and effective techniques to solve the long standing challenge of fresh water supply . However most of the current solar evaporators are designed with the light absorbing surface in parallel with the water evaporating surface which causes significant salt accumulation and stability issues . Herein a facile but scalable approach is reported to build tree inspired cone shaped 3D Janus evaporators by spatially isolating absorption surface and evaporation surface which exhibit self regenerating behavior and significantly extended durability . Such evaporators employ hydrophobic polymer based inner cones as the light absorbing surface which were fabricated | A 3D cone evaporator spatially isolates absorbing surface and evaporating surface. The 3D cone evaporator has significant absorbance of 99.80 across 200 2500nm. The evaporator features rapid photothermal response within 200s . The evaporator is also an environmental energy enhanced one. An evaporation rate 1.723kgm. and efficiency 107.80 are accomplished. |
S138589472031651X | At present photocorrosion is one of the factors that seriously restrict the improvement of photocatalytic performance . Herein we successfully constructed AgVO | A photocatalyst solved two urgent problems simultaneously that is it has the property of One Stone and Two Birds. Effects of various parameters on Cr VI reduction were studied systematically. Toxicity assessment after photocatalytic reaction were studied. The 20 AgVO. ZnIn. exhibited the top flight photoreduction Cr VI activity. AgVO. ZnIn. were universal for photodegradation of Cr VI and antibiotics. |
S1385894720316533 | The design of high energy power density supercapacitors requires advanced electrode materials with high surface area suitable pore size for ion diffusion as well as mechanical robustness under high pressure compression . For conventional graphene materials with planar structure high pressure compression inevitably leads to reduced surface area and sluggish ion diffusion due to restacking . Here we present highly crumpled nitrogen doped graphene like material with abundant wrinkles in nanoscale utilizing one step pyrolysis method to enable compression resistant supercapacitive performance . The highly curved structure enabled CNG to retain large specific surface area 952m | Highly crumpled graphene like material is obtained by one step pyrolysis method. The material possesses abundant wrinkles with ultra small curvature radius. The crumpled structure avoids restacking of graphene sheets under high pressure. Supercapacitors using this material deliver high energy power density. |
S1385894720316545 | Triboelectric nanogenerator is a novel energy harvester technology which attracted a great deal of attention in the area of self powering electronic devices due to its high output power density . In this investigation zinc oxide nanowires were incorporated into the electrospun polyvinylidene fluoride and nylon 11 nanofibers to construct new TENGs based on PVDF ZnO NWs nylon ZnO NWs . This study showed that ZnO NWs were aligned along the fiber axis during electrospinning . The cooperative and mutual alignment of polymer chains with ZnO NWs were also achieved in the fibers because of electrospinning which promoted formation of the highly polar crystalline | A new TENGs based on PVDF ZnO NWs nylon ZnO NWs was constructed with highly polar crystalline phase by electrospinning. The maximum power density of ZnO NWs incorporated PVDF nylon 11 triboelectric nanogenerator reached as high as 3.0W m. A potent and sustainable power source for portable electronic devices was demonstrated. |
S1385894720316557 | Mesoporous metal oxides with high crystallinity and large surface area as compared with its counterparts show better performance in many applications . Current synthesis of MMOs mainly uses amphiphilic block copolymers as templates to co assemble with metal oxide precursors . Due to the block copolymers are usually decomposed below 300C in air the obtained MMOs are amorphous or semicrystalline with low thermal stability . Here we develop a general and facile polymer oriented evaporation induced self assembly strategy to prepare thermostable MMOs with high crystallinity and large surface area by using metal chlorides as metal oxide precursors and cationic polymers as porogens . Our method is shown to access a library of crystalline MMOs with a range of compositions and structures including single component MMOs doped MMOs multi component MMOs and polymetallic oxide . This approach may open up new horizons in preparing other highly crystalline mesoporous materials such as metal phosphates metal sulfides metal carbide and so on . | A general strategy was developed to prepare crystalline mesoporous metal oxides. The method overcomes the weaknesses of traditional solgel based self assembly route. The as synthesized mesoporous TiO. possesses the excellent photocatalytic activity. |
S1385894720316570 | Co Ce as the dominant active sites immobilized MCM 48 was fabricated via H bonding by the hydrothermal and incipient wetness co impregnation method . The incorporation of Co Ce MCM 48 provided higher mineralization of sulfamethazine than Co MCM 48 and Ce MCM 48 in O | The Co Ce MCM 48 O. PMS could mineralize sulfamethazine efficiently. The interface complex was form between PMS and Co Ce MCM 48. The electron transfer rate was enhanced in Co Ce MCM 48 O. PMS. The Co Ce synergistic effect improved the redox behavior in O. PMS. Rich ROSs were generated in Co Ce MCM 48 O. PMS. |
S1385894720316582 | Artificial enzyme mimics have recently emerged as alternative biocatalysts for overcoming the intrinsic fragility of natural enzyme in practical applications . However current researches regarding mimetic enzymes are still confined to very few reaction types with artificial oxidoreductases as dominance . Herein inspired by nature we designed and fabricated a range of Zn Triazole coordination polymers that presented similar coordination structures with the active site of natural carbonic anhydrase . These synthesized compounds exhibited inherently mimetic function with natural CA for catalyzing the hydrolysis of | ZnTazs were designed and fabricated inspired by the geometric structure of natural CA. ZnTazs exhibited mimetic function with natural CA for hydrolysis of. NPA. ZnTaz 1 and ZnTaz 2 could promote the hydration and sequestration of CO. gas. The similar coordination environments of Zn triazoles with natural CA are possibly function related. |
S1385894720316600 | Designing and exploring a simple novel and smart synthetic concept to fabricate highly efficient and dual function electrode material at an optimum cost for green energy harvesters has been a long standing challenge . Herein for the first time we investigated a simple and smart concept to fabricate dual function vapor solid phase grown copper oxide nanowires Cu | A smart synthetic concept was employed to fabricate the CuOx. electrode. The resulting CuOx. electrode exhibits a specific capacity of 331.6mAh g. An asymmetric device shows a high energy density of 49.8wh kg. The CuOx. electrode exhibits high catalytic activity for OER. |
S1385894720316612 | Zeolitic imidazolate framework derived carbons have been considered promising catalysts for the degradation of organics in water through peroxymonosulfate based oxidation processes . The construction of hierarchical hollow porous structures while retaining the properties of ZIF derived carbons is highly desirable for a catalyst but remains an arduous challenge . Herein ZIF 67 | Zeolitic Imidazolate Frameworks derived carbon with hollow structure was synthesized. The hollow carbon exhibits high activity in catalytic ozonation of 4 nitrophenol. The carbon can be easily separated from the solution and has good reusability. Factors that affect 4 nitrophenol degradation are examined. SO. is the main reactive species participating in 4 nitrophenol degradation. |
S1385894720316648 | Patients who have diabetes must receive insulin administration two to three times every day via subcutaneous injection after measurement of blood glucose levels using lancet blood glucose meter with the side effects of pain and lipodystrophy . Achieving instrument free glucose biosensing and persistent glycaemic control in a painless and safe way is the ultimate goal of diabetes management . Here we report the design of a microneedles set comprising a glucose biosensing microneedle patch and an insulin delivery MP . Once in the skin the skin interstitial fluid would diffuse into GBMP from epidermis to develop colour in abnormal glucose concentration which then quantified by smartphone . Subsequently the IDMP composing of free insulin and biodegradable insulin loaded glucose responsive nanovesicles as an artificial on skin pancreas could be applied for hyperglycaemia triggered insulin release to self regulate BGLs and improve the health and quality of life for patients with type 1 and advanced type 2 diabetes . In chemically induced type 1 diabetic rats the BGLs can be rapidly measured by GBMP and the BGLs can also be immediately reduced to and kept at normoglycaemic levels for up to 13h by IDMP . The whole system permits the syringe free diabetes management avoiding both hyperglycaemia and hypoglycaemia . | High swelling ability of microneedles MNs for skin interstitial fluid extraction. On skin glucose detection by naked eyes or smartphone using MNs. New polymer nanovesicles with a hyperglycaemia triggered insulin release character. MNs are capable of on demand insulin release for long acting glycaemic control. |
S138589472031665X | Exploring highly activity and stable electrocatalysts for oxygen evolution reaction is of vital importance for sustainable energy conversion processes . Herein a facile strategy is developed to synthesize Ni doped CoOOH nanosheets with poor crystallinity and 3D mesh structure which is in situ derived from the Na | Ni doped CoOOH nanosheets with poor crystallinity and 3D mesh structure was prepared. A Na. induced in situ conversion strategy is developed. Ni CoOOH NF shows excellent catalytic activity in neutral and alkaline media. |
S1385894720316661 | Metal free carbocatalysts are raising increased interest in advanced oxidation processes for green degradation of aqueous organic pollutants . In the present study a series of N doped hydrochars was prepared from pinewood biomass and used in carbocatalysis toward catalytic peroxymonosulfate activation to degrade refractory endocrine disrupting compounds . Nitrogen doping was found to regulate the concentrations and types of persistent free radicals on hydrochar promoting the electron transfer and oxidative degradation of the contaminants . Mechanistic studies revealed that graphitic N not only shows a strong electron transfer to facilitate PMS activation in a nonradical pathway but also induces the formation of oxygen centered PFRs from the structure defects for a radical oxidation pathway . More importantly the PMS NHC system demonstrates efficient degradation and satisfactory stability for real water treatment . This study has gained in depth understanding on the roles of N dopants in radical and nonradical pathways of biomass based carbocatalysis and will provide a promising and environmental friendly route for efficient degradation of refractory endocrine disrupting compounds for green remediation . | N doping of biochar induced a variation of persistent free radicals PFRs . Different types of PFRs were found on hydrochar and N doped hydrochar NHC . NHC was a robust catalyst for degradation of endocrine disrupting compounds. Graphitic N played a role in both radical and nonradical pathways for the degradation. |
S1385894720316685 | Artificial electric skin which is capable of strongly adhering to different parts of human bodies and precisely detect different types of human motions shows great promise for biomedical prosthetics human machine interfaces wearable devices and soft robotics . In this study biocompatible ionic gels with shape adaptability and skin adhering are produced through in situ polymerizing boronic acid and acrylamide in the presence of chitosan containing catechol groups . The chemical cross linkers are capable of modulating their elasticity toughness and stretching tolerance . The reversible cross linkers of H bonding and dynamic covalent bonds endow the gels not only with strong adhering strength on different surfaces and rapid self healing in minutes but also with large stretchability and plasticity for shape adaptability on irregular surfaces . Thus by introducing mussel inspired catechol groups into biomass based macromolecules a novel type of artificial ionic skin is designed with high sensitivity in combination with mechanical stretchability and bio compatibility . They will promise great potential as the skin friendly sensor to detect various human motions with high accuracy and repeatability . | Biocompatible and self healing chitosan based ionic gel was facilely fabricated using dynamic crosslinking. Chemical cross linkers could modulate elasticity toughness and stretching tolerance of the hydrogel. The ionic gel skin can be utilized as shape adaptable and skin adhering sensor for human motions. |
S1385894720316697 | Aqueous phase reforming of four polyols was studied over a bimetallic Pt Pd catalyst supported on mesoporous carbon in the temperature range between 200C and 225C . Addition of formic acid was studied for a potential industrial application which involves upstream reactive extraction of hemicelluloses . | Aqueous phase reforming of polyols over mesoporous carbon supported bimetallic Pt Pd catalyst. Detailed identification of gas and liquid products. Improvement of hydrogen production by adding formic acid. Similar selectivity to alkanes for most of polyols with mainly methane. Presence of significant amounts of methanol and propane diols in the liquid phase. |
S1385894720316703 | Functional graded nanofibrous membrane are gaining great attention in biomedical fields for the reason that it allows tunning the composition structure and bioactivity of each layer . Herein we reported a novel FGM prepared by sequential electrospinning technique to guide bone tissue regeneration . The FGM consisted of two aligned gelatin nanofiber surface layers to improve the biocompatibility and enhance bone regeneration and a random PCL nanofiber core layer to render the membrane isotropic mechanical strength . To eliminate bacterial infection risk the pro metronidazole with infection responsive release property was synthesized and loaded into the outer layer . The FGM displayed comparable mechanical strength with PCL and similar biocompatibility to gelatin . The surface aligned nanofiber structure could regulate epithelial cell spread along the aligned direction instead of infiltration growth and were more beneficial for the migration and proliferation of osteoblast . In addition the loaded Pro MNA displayed infection responsive release behavior and robust self defensive antibacterial function was achieved . These results suggested that the FGM simultaneously fulfil several criteria of biocompatibility space maintaining capability antibacterial property and osteoconductivity . Consequently the FGM displayed better bone regeneration performance than the commercial Bio Gide membrane evaluated by the skull defect model of rabbit . We concluded that the FGM had potential to be used as an ideal GTRM due to its improved overall performance . | A multi functional graded nanofibrous membrane was designed for GTR. The aligned nanofibers could promote the osteoblasts proliferation and migration. The loaded Pro MNA displayed self defensive smart antibacterial property. The membrane showed better osteogensis performance than the Bio Gide membrane. |
S1385894720316739 | Three dimensional few layer graphite framework shows great potential in various fields such as energy storage and electrocatalysts owing to their porous structure superior electronic conductivity and good structural mechanical stability . In this work 3D hollow few layer graphite framework is fabricated by a temperature driven dynamic catalytic strategy . The in situ generated Ni nanoparticles serve as a catalyst to promote the graphitization of carbon source . By optimizing the activating temperature the initial small Ni nanoparticles gradually aggregate and grow into larger ones during which they act as a dynamic catalyst to induce the construction of the 3D few layer graphite framework along their aggregation paths . When demonstrated as the anode in Li ion battery the as prepared 3D few layer graphite framework exhibits excellent electrochemical performance . The present synthetic strategy potentially represents a general method that can be extended to the construction of other carbon based architectures for diverse applications . | A temperature driven dynamic catalytic synthesis strategy is reported. 3D hollow few layer graphite framework is fabricated. The prepared 3D few layer graphite framework exhibits excellent electrochemical performance. |
S1385894720316752 | Self healing conductive hydrogels as artificial skin like materials hold great potential applications in the fields of artificial intelligence soft robotics and personal healthcare . However it remained challenging to construct stimuli free self healing biomimetic hydrogels with ultra stretchability and excellent sensitivity . Herein polyaniline was coated on the surface polycarboxylic multi branched cellulose nanocrystals via templated polymerization . Afterword rod like Multi CNC PANI served as a dynamic bridge endowed those hydrogels hierarchical structure and dynamic hydrogen bond interactions doped with polyvinyl alcohol borax system . Combined with the dynamic borate ester bonds the biomimetic nanocomposite hydrogels had high breaking strength ultra stretchability rapid self healing properties adhesiveness decent biocompatibility and sensitivity . Especially the hydrogels could keep good self healing ability both in air and underwater without any stimuli and the self healing efficiency could reach up to 99.56 within 120s . This hydrogel sensor could sensitively detect and distinguish human motions including swallow fingers wrist elbow and knee joints in real time . Besides the self healed hydrogel gave detective signal with uniform and repeatable sensitivity which endowed the hydrogels mechanically adaptability and good store stability . Therefore the strategy may provide unique opportunities in designing biomimetic sensors with skin like mechanical stretchability sensitivity and self healing properties . | The Multi CNC PANI PVA hydrogel exhibited robust strength and stretchability. The Multi CNC PANI PVA hydrogel showed highly sensitivity. Dynamic hydrogen bond network endowed the hydrogel rapid self healing properties. |
S1385894720316764 | Computational countercurrent flow investigation in the structured packed column is a multiscale problem . Multiphase flow studies using the volume of fluid method in the representative elementary unit of the packed column can provide insight into the local hydrodynamics such as interfacial area film thickness etc . The interfacial area dictates the mass transfer in the absorption process and hence the overall efficiency of the column . The impacts of a solvents physical properties liquid loads and static contact angle on the interfacial area have been examined previously . In the present study the dynamic contact angle was used to explore the impact of contact angle hysteresis on the interfacial area . The DCA has pronounced impact on the interfacial area for the aqueous solvent of 0.10M sodium hydroxide . The interfacial area shows undulation and does not achieve the pseudo steady state . In contrast the interfacial area gets a net pseudo steady value for aqueous solvent that contains 40 monoethanolamine by weight . Wetting hysteresis was also explored via simulations conducted with initially dry and wetted sheets . For the 0.10M NaOH aqueous solvent the use of initially wetted sheets led to a slightly higher value of the interfacial area than the use of initially dry sheets at the same liquid load and DCA . As expected wetting hysteresis reduces with increasing liquid loads but wetting hysteresis is not significant for 40 MEA aqueous solvent which might feature lower surface tension and higher viscosity . Overall the effect of the DCA on interfacial area is not as pronounced as it is found on a flat surface . | Effects of the dynamics contact angle DCA on the interfacial area in a packed column. Effects of the initial wetting of sheets on the interfacial area of a packed column. Initial wetting and DCA has marginal impact on the interfacial area for a highly viscous solvent. |
S1385894720316788 | The objective of this study was to investigate the impact that algae have on bacterial treatment of poultry litter slurry anaerobic digestate . We hypothesized that algae could provide benefits to heterotrophic and nitrifying organisms due in part to provision of dissolved oxygen . No other studies to our knowledge have shown that algae provide benefits to nitrifying bacteria in the treatment of anaerobic digestates . Batch cultures of the native digestate community were grown alone or with the addition of activated sludge microorganisms and or the green algae | Symbiotic growth benefits observed between algae and activated sludge microbes. Algae supported nitrifying bacteria which otherwise died out in digestate. Algae supported phosphate accumulating bacteria population in digestate. Algae promoted organics removal from anaerobic digestate by heterotrophs. |
S138589472031679X | In this work an effective and facile extrusion based mixing and coating process for the manufacturing of electrodes for Li ion batteries is proposed . Following the development of appropriate pastes and basic rheological investigations promising formulations are dispersed continuously in a twin screw extruder and directly coated on a current collector foil using the example of LiNi | Extrusion based coating is promising for the fabrication of Li ion batteries. Improved homogeneity and negligible binder migration during fast drying procedures. Significantly reduced energy and materials demands leading to lower costs. Extended the process window for electrode design parameters. |
S1385894720316806 | To study the long term effects of polycyclic aromatic hydrocarbons on traditional denitrification and phosphorus removal process different concentrations of PAHs were added into two sequencing batch reactors . Experimental results demonstrated that NAP and PHE had a positive influence on denitrification performance and that the total nitrogen efficiency was 79.59 with effluent less than 15mg L. However phosphorus removal performance began to deteriorate with 0.1mg NAP L and 0.2mg PHE L. Microbial community analysis revealed that phosphorus accumulating organisms were enriched in the NAP system compared to the PHE and blank test which led to a reduction in PO | The naphthalene NAP and phenanthrene PHE were first introduced into the denitrification and phosphorus removal system. NAP and PHE could enhance the nitrogen removal. The higher concentration of NAP and PHE deteriorated PO. P removal. Several functional bacteria were enriched in the SBR with NAP and PHE addition. PHE could be degraded easily in the SBRs comparing with NAP. |
S1385894720316831 | Conductive hydrogels as wearable devices meet the basic demands of mechanical flexibility and smart sensing . However achieving a combination of adequate skin adhesion long term stability and visible human sensor interface are still challengeable . Here a simple and effective strategy was proposed to fabricate all in one hydrolyzed keratin protein modified polyacrylamide composite hydrogel transducer . Hydrolyzed keratin endowed hydrogel with lower modulus and ultra stretchability to minimize wearing related tension and discomfort . Specially robust skin adhesion was obtained to achieve precise sensing without delamination . Impressively the hydrogel had high transparency and exhibited wide range temperature tolerance . Besides the hydrogel with stable conductivity was extremely sensitive to pressure and strain at a wide range . As a result the obtained transducer could not only detect human motion respiratory mode and vocal cord vibration but also identify handwriting and facial expression . This work shed a new light on the design of next generation skin like electronic devices with applications in human machine interface ionic skin artificial intelligence and healthcare monitoring . | Hydrolyzed keratin endowed hydrogel with excellent adhesion for seamless contact. The hydrogel exhibited high transparency for visible human machine interfaces. Anti freezing and non drying ability of hydrogel was achieved. Hydrogel with high sensitivity served as transducer for monitoring human motions. |
S1385894720316855 | Exploring the effect of water vapor on the benzene adsorptive behavior is of practical importance and scientific interest . The presence of water vapor in the gas stream altered the breakthrough curves of benzene as well as the selectivity of carbon materials towards adsorbates . The work herein elucidated the competitive adsorption mechanism based on experimental observation and molecular simulation . At relative humidity 10 water molecules showed less effect on the benzene adsorption that benzene entered the micropores and mesopores while water molecules were primarily adsorbed in the mesopores . Since the polar water molecules presented higher affinity towards the surface functionalities these molecules preferentially occupied the adsorption site via hydrogen bonding with increased RH . Water cluster was gradually formed through water water interactions which were characteristics of pore filling . A two layer stacking of adsorbates was observed for co adsorption . The first layer was primarily composed of water molecules with the average distance of 2.99 3.19 to the surface functionalities . The second layer was primarily benzene molecules which were aggregated in T shaped displaced T shaped and parallel configurations . These molecules were separated at 4.67 6.17 from the functional groups and mainly adsorbed by water benzene interaction . | Competitive adsorption occurred for co adsorption of benzene and water vapor. Water molecules occupied the adsorption sites to reverse selectivity to benzene. Water molecules formed the first layer stacking around oxygen functionalities. Benzene formed the second layer stacking via benzene water interaction. |
S1385894720316867 | Hydrothermally synthesized Titanium Nanotubes are sulphonated and characterized to confirm their morphological physical and chemical characteristics . Different weight percentages of Sulphonated TNTs are introduced into Sulphonated Poly Ether Ether Ketone where the negative channels that form with the aid of sulphonic acid groups play an essential criterion for the improved proton conductivity and better water holding capacity . A tubular designed Microbial Fuel Cell of 300mL volume is fabricated to test the potentiality of the self assembled inorganic and functionalized Titanium nanotubes incorporated SPEEK membranes . SPEEK 7.5 S TNT exhibits a maximum power density of 121 mW m | Ideal selection of electrolyte that influences the electrode kinetics is crucial. SO. H groups of S TNT results in effective ionic channels than. OH groups. A maximum power density of 121 mW m. is recorded for SPEEK 7.5 S TNT. Exoelectrogens facilitate direct electron transport besides bioelectrogenesis. Gram negative bacteria predominate in power generation than the Gram positive. |
S1385894720316879 | For the preparation of high performance thermoset based electromagnetic interference shielding materials at low filler loading a simple and practical method is still absent . Herein the Epoxy Polyether sulfone Multi walled Carbon Nanotubes composites were prepared by ultrasonic treatment and dichloromethane assisted dispersion . The selective localization of MWCNTs in EP phase prevented the interruption of phase continuity due to the increase of interfacial tension in the early stage of reaction induced phase separation resulting in co continuous structure in the cured EP PES blends . Therefore reliable mechanical properties and satisfactory EMI shielding performance can be obtained at low MWCNT loading . The EP PES | Co continuous conductive network in epoxy composites was in situ constructed. The co continuous morphology was obtained in an unbalanced component ratio. Satisfactory mechanical properties and EMI shielding performance were obtained. |
S1385894720316880 | A novel strategy of utilizing eggshell wastes to condition food wastes anaerobic fermentation for efficient volatile fatty acids production was proposed . The VFAs production especially acetic and butyric acids was significantly accelerated and enhanced by eggshell conditioning . The enhanced effects were dose dependent and improved by approximate 13 folds with optimal dose when compared with that in control . Eggshell conditioning synchronously enhanced the FW solubilization hydrolysis and acidification steps resulting in high VFAs production . Further analysis found that the environmental conditions | Eggshell conditioning enhanced the VFAs production from FW anaerobic fermentation. FW solubilization hydrolysis and acidification were synchronously enhanced. Eggshell conditioning greatly improved the environmental conditions. pH ORP . The key enzymes involved in carbohydrates and energy metabolisms were improved. The functional genes distributed in fatty acid biosynthesis pathway were enhanced. |
S1385894720316892 | Water pollution is becoming increasingly serious and one of the main culprits is the excessive phosphate in aquatic systems . Herein a flexibly prepared environment friendly sustainable and highly efficient bio sorbent | Facile integration of Zr OH. and aminated lignin for efficient phosphate capture. Excellent selectivity and anti interference capability toward phosphate. Expectable reusability and mechanical stability. Exceptional high phosphate adsorption performance. |
S1385894720316909 | The free deoxyribonucleic acid cassette harboring antibiotic resistance gene in drinking water has been linked with impaired public health . To prevent the problem of antibiotic resistance we have synthesized a CeO | CeO. was synthesized from the self combustion propagation protocol. CeO. is a promising adsorbent for the removal of DNA harboring ARGs from tap water. Free DNA solution showed a high buffering effect during adsorption reaction. Initial free DNA concentration and pH greatly influenced the reaction. Phosphate and nitrate were unbeneficial during the adsorption process. Adsorption mechanism is governed by electrostatic force of attraction. |
S1385894720316910 | The ideal patch for tissue repair can induce host cells to migrate directionally to defected area and proliferate rapidly to form healthy granulation while avoiding the adhesion and abrasion with adjacent tissues . However existing patches hardly achieve this goal because of the contradictory processes during tissue repair the single property of biomaterials as well as the absence of effective surface microstructures . Herein we present a bio inspired composite patch film that simultaneously integrate opposite properties of adhesion and anti adhesion . Based on a double layered inverse opal scaffold the liquid paraffin is infused into one surface to form an anti adhesive Nepenthes like slippery liquid infused porous surface for isolating defected area with adjacent viscera while methacrylated gelatin hydrogel is infiltrated into the opposite surface with design of anisotropic microgrooved structures aiming to facilitate cell adhesion promote division growth and induce oriented migration . We have demonstrated that the patch film could promote tissue repair without adhesion related complications after being implanted into a rat model with abdominal wall defects . These features make such patch film highly versatile for application in regenerative medicine . | A novel bio inspired composite patch film for ideal tissue repair. Patch designed with anisotropic surface wettability adhesion and microstructures. Anti adhesive SLIPS of patch film for prevent adhesion of adjacent viscera. Adhesive GelMA hydrogel surface for promoting cell adhesion and growth. Anisotropic structures on GelMA surface for inducing cells migrate directionally. |
S1385894720316922 | Amorphous metal boron alloys have attracted extensive interest in catalytic reactions because a large number of randomly oriented bonds constitute a glass like structure with abundant defects and unsaturated surface atoms which are catalytically active . However the synthesis of non precious amorphous metal boron with a multilevel structure remains a challenging task . Here ultra long mesoporous cobalt boron amorphous alloy nanochains are firstly synthesized by using the soft templating approach with the assistance of a magnetic field . Owing to the high surface area and the unique behavior of Co within the Co B alloy mesoporous CoB nanochains show superior activity and selectivity in liquid phase cinnamaldehyde hydrogenation in cinnamyl alcohol . This work opens an avenue for the exploration of mesoporous amorphous metal alloys towards liquid phase selective hydrogenation reaction . | Mesoporous cobalt boron CoB nanochains are synthesized by magnetic field. Mesoporous structure enhance the surface areas and diffusion of reactant molecules. This strategy will provide opportunities for industrial catalytic applications. |
S1385894720316946 | A novel thiol functionalized covalent organic framework was prepared as an adsorbent for the simultaneous removal of BTEX and Hg ion from water . The COF S SH was obtained | A novel thiol functionalized covalent organic framework was prepared. High binding ability and fast uptake kinetics for BTEX and Hg II ion. High binding selectivity for Hg II in the presence of other common metal ions. Efficiently simultaneous removal of BTEX and Hg II ion in simulated sewage. |
S1385894720316958 | Organic waste recycling is an important emergent technology in development to combat the growing crisis of nutrient scarcity . Many waste streams and effluents contain high concentrations of valuable nutrients but chemical treatments and recovery processes are both fiscally and energetically expensive . Microalgae are well studied for use in biological nutrient recovery systems but conventional culture techniques still have significant shortcomings especially regarding energy balancing . This study sampled microalgae and photosynthetic consortia from the local environment and artificially adapted them to blended untreated wastewaters using a stepwise bioprospecting approach . Liquid biogas digestate was selected for its high phosphorus and nitrogen concentrations and difficulties associated with recycling while aquaculture effluent was selected to dilute BD for its slightly acidic pH low turbidity and sheer volume produced in Finland . Mixed consortia showed 2greater biomass production than cultures containing only eukaryotic microalgae under concentrations of 1025 BD . At 5 and 10 BD all experimental consortia removed enough dissolved P to satisfy EU wastewater discharge standards however only 5 BD results met N discharge standards . by the end of the cultivation period . In contrast with nutrient removal findings higher BD concentration resulted in more efficient removal of dissolved inorganic carbon . Biomass accumulation and removal of P and N were enhanced by the addition of plastic mesh scaffolding cultures grown with scaffold demonstrated an increase of 0.48g L biomass and 60 higher rates of N and P removal than cultures grown without scaffolding . Taken together these results provide the foundation for a circular bioeconomy approach for integrated biomass production wastewater remediation and removal of nutrients and carbon . | Local consortia were compared with mixed eukaryotes and commercial. Untreated wastewaters were used as media dairy aquaculture and biogas digestate. Nutrient removal satisfied EU discharge standards for dissolved N and P after 10 d. Consortia produced the most biomass 51.7100 higher than eukaryotic cultures . Growth and removal of nutrients and carbon were enhanced by plastic scaffolding. |
S1385894720316995 | The organic pollutants and heavy metal ions are critical harmful substances in waste water because they destroy the ecological systems and lead diseases to animals and human beings . Unfortunately the simultaneously remove of them in one system is still a challenge due to their different treating mechanism . Herein a novel magnetic h Fe | Fe. @Au PDA hollow nanosphere is prepared by a facile one step method. H Fe. @Au PDA can simultaneously treat the toxic ions and contaminants. It has good catalytic and adsorption properties for 4 nitrophenol and U VI . |
S1385894720317010 | A microfluidic colorimetric system comprising of a colorimetric paper chip device and a microanalysis cassette is presented for detecting the nitrite concentration in foods . In the proposed system 1l of nitrite sample is dropped into the reaction region of the colorimetric paper chip device where its reacts with embedded Griess reagent to produce a pink complex . A color image of the reaction complex is caught using an embedded camera and transmitted to a cell phone within the microanalysis cassette via a WiFi connection . Finally the images were analyzed by self written RGB software to evaluate the nitrite concentration . The results acquired for 11 known nitrite solutions ranging from 1 to 100ppm show that the measured R G B intensity is related to the nitrite concentration and the determination coefficient R | A microfluidic colorimetric system is presented for detection of nitrite concentration in foods. The system comprises a colorimetric paper chip device and a microanalysis cassette. Nitrite concentrations of 24 commercial food samples are measured. The measurement results deviate by no more than 7.3 versus official method. |
S1385894720317034 | Biological contamination of surfaces is a thorny issue that brings series of adverse factors to the daily life and industrial manufacture . A dragonfly wing mimicking nanopillar array of ZnO Au on Polydimethylsiloxane with two fold bactericidal activity as well as the antiadhesive property has been developed . In this process ZnO nanopillar is obtained using a hydrothermal method followed by the introduction of plasmonic gold nanoparticles via a photo reduction protocol . The obtained PDMS ZnO Au surface demonstrates physical antibacterial performance resulting in a killing rate of 65.5 in dark . Furthermore the surface effectively inactivates bacteria under visible light irradiation yielding a lethality 99.9 in 30min . The advantages of high lethality rate and short action time are endowed to PDMS ZnO Au by a two fold antibacterial action combining the enhanced photocatalysis upon the introduction of Au nanoparticles and the mechanical property of biomimetic nanostructure . Meanwhile the nanopillar modified PDMS can also function as a superhydrophobic surface and efficiently impede bacterial adhesion by over 99.9 . Therefore the approach presented here holds a promising solution to tackle biological contamination for medical paint catheter and implant equipment . | ZnO Au nanopillars are fabricated by hydrothermal and photo reduction. PDMS ZnO Au shows a mechanical antimicrobial effect in the dark. A two fold antibacterial action occurs for PDMS ZnO Au under visible light. The modified PDMS could also function as an antifouling surface. |
S1385894720317125 | Monoacylated symmetrical diamines are building blocks or intermediates of several well established drugs . However for the symmetrical diamines the two amine groups located in a similar chemical environment make the selective monoacylation rather difficult and no kinetics study has ever been reported before . To comprehend this kind of reaction more deeply a continuous flow microfluidic system was developed to evaluate the reaction kinetics of | The kinetics of. phenylenediamine monoacylation was studied in a microreactor. The possible reaction mechanism was postulated from the kinetics study. The accuracy of the kinetic model was proved by validation experiments. The effect of each parameter on selectivity was studied by the kinetic model. |
S1385894720317149 | Deoxygenation is a key enhancement process for biomass derived biofuel production . To understand the DX mechanism of palm oils we performed experimental and computational studies to investigate the DX reaction of palmitic acid on Ni | Reaction mechanisms of competitive deoxygenation via HDO DCO DCO. pathways. Characterization result suggests that 001 Ni. P facet is the dominant plane. DCO pathway is preferred over HDO while DCO. is unlikely. Rate limiting steps C. OH hydrogenolysis DCO and C. COOH hydrogenation HDO . Higher reaction temperature tends to increase selectivity toward HDO pathway. |
S1385894720317150 | The development of effective sorbent materials to remove mercury from real waters is a challenge . Here we report the simple preparation of high performance GOPEI aerogel for Hg remediation by self assembly of high branched polyethyleneimine with elevated molecular weight and graphene oxide under acidic conditions . Our studies revealed that the improved dimensional stability of GOPEI aerogels critical for their use as sorbent materials was obtained for a ratio GO PEI 3 1 . A small amount 10mgL | An aerogel is obtained from graphene oxide and a high MW branched polyethyleneimine. Highly efficient removal of Hg from natural waters tap river and sea . GOPEI high efficiency is attributed to persistent negative surface charge. The aerogel performance is poorly affected by the existence of co ions and pH. The residual concentrations of Hg in water is in accordance with WHO. |
S1385894720317162 | Advanced electromagnetic wave absorbing materials with low cost lightweight high absorption efficiency and wide absorption frequency are extremely desirable for solving electromagnetic radiation . Herein an excellent microwave absorber composed of NiCo | 3D NiCo. C hybrid composites were successfully constructed for the first time. The optimal. of NiCo. C reaches 64.74dB with the maximum EAB of 5.26GHz. The enhancement is attributed to the matched impedance and improved loss ability. The attenuation mechanism was discussed according to the characterization results. |
S1385894720317174 | The effect of pulsating flow on the rate of mass transfer in a parallel plate reactor was studied by the electrochemical technique . For batch reactor pulsating flow increased the rate of mass transfer compared to natural convection by a factor ranging from 1.05 to 2.43 . A mathematical model was developed to prove that surface renewal plays a major role in enhancing the rate of mass transfer at high pulsation velocities . The combination of steady flow and pulsating flow increased the rate of mass transfer by a factor ranging from 9 to 17 under steady laminar flow and from 3 to 4 in case of turbulent steady flow . Mass transfer data were correlated for batch and continuous reactors by dimensionless correlations . Applications of the present correlations in the design and operation of parallel plate contactors such as electrochemical reactors heat exchangers catalytic reactors and membrane equipment were discussed . | The effect of pulsating flow on the rate of mass transfer in a parallel plate reactor was studied. The effect of hydrodynamic conditions and physical properties of the liquid was investigated. Mass transfer enhancement due to pulsating flow was quantified under various flow conditions. Mass transfer data were correlated by dimensionless correlations. The correlations are helpful for the design and operation of parallel plate contactors. |
S1385894720317198 | Endowing conjugate microporous polymers with appropriate electrical conductivity greatly expands the application scope of CMPs especially in electronic related applications . In this paper we report a strategy to prepare electrically conductive CMPs via confined polymerization of pyrrole in micropores . The conductive CMPs shows remarkably enhanced dielectric loss behaviors toward microwaves and exhibits high electromagnetic absorption performance where the effective EMA bandwidth reaches 7.52GHz and the maximal absorption achieves 59.7dB . A confining model is adopted to explain the reason for the enhanced dielectric loss of conductive CMPs . This research expands application scope of CMPs in areas of conductive materials . | Confined polymerization of pyrrole monomer in micropores diameter2nm. Conductive conjugate microporous polymers CMPs was synthesized. Conductive CMPs show enhanced dielectric loss toward microwaves. Maximum effective absorbing width of conductive CMPs reaches 7.52GHz. |
S1385894720317216 | Achieving the artificial supramolecular polymer with excellent low temperature self healing capability has been a new topic of great significance in soft robotic actuators and smart coating . Nevertheless the production of robust polymer with decent low temperature self healing ability is severely impeded by its high crosslink density and low dynamic crosslink bond . Here we report a design strategy that both low crosslink density and high dynamic crosslink bonds are introduced into polyurea networks to achieve a tough and low temperature healable supramolecular system of polypropyleneglycol polydimethylsiloxane Zn . Incorporating the long PPG segments into linear PDMS chains endows the resulting polymer with relatively low crosslink density allowing fast polymer chains movement to unite fractured surfaces . Moreover the dynamic characteristics and self healing capability of the supramolecular network were effectively enhanced by combining the unique dynamic exchange feature of weak Zn urethane coordination bonds and low temperature inhibition dissociation effect of hydrogen bonds . As a result the representative sample of PPG PDMS Zn 0.5 polymer displays a robust tensile strength of 0.98MPa and a high self healing efficiency of 97 at 20C and these features have rarely been achieved in the previously reported materials . With these promising characters such kind of supramolecular polymers can find wide applications in fields of anti icing and winter anti frosting paints and antarctic pole exploration as well . | A polymer with low temperature self healing ability was developed for smart coating. The self healing ability was determined by Zn urethane bonds and hydrogen bonds. The polymer film also displays outstanding anti icing ability. This polymer is a highly promising for self healable anti icing paint. |
S1385894720317228 | Perovskite solar cells have been widely investigated in the past decade with a certificated record efficiency up to 25.2 which is comparable to the inorganic thin film and crystalline silicon photovoltaics . Further improving the device photovoltaic performance and long term stability has been pursued to impel commercial application . Ionic liquids an old class of compounds that contain large asymmetric organic cations coupled with organic or inorganic anions have been used in high performance PSC devices with enhanced efficiency and stability due to their unique physicochemical properties . Herein the recent progress of ionic liquids engineering in PSCs is comprehensively reviewed and the potential mechanisms on device performance and stability are illustrated . Specifically the main beneficial effects of ionic liquids including crystallization process modulation energy level alignment independent charge extraction layer or dopant enhancing the moisture and thermal stability are summarized . Future prospects towards the realization of ultra stable and efficient PSCs with ionic liquid engineering are also discussed and presented . | Ionic liquids engineering in perovskite solar cells is comprehensively reviewed. Ionic liquids are widely introduced to control the perovskite crystallization process. Effect of ionic liquids on the energy level alignment is discussed. Potential of ionic liquids to improve long term stability is presented. |
S1385894720317277 | Surfactant degradation is a challenging problem related to wastewater treatment . The source of such wastewater can be industrial or domestic with concentrations varying in between 1 to 300mg L. Due to the sheer volume of such streams both kinetics of degradation as well as scale of operation become the governing criteria for the success of a technology . In this work the authors have reported for the first time the possibility of treating surfactant laden wastewater using hydrodynamic cavitation technology . A systematic approach has been adopted whereby the following modus operandi were taken selection of orifice diameter for HC treatment studying the effect of pH and inlet pressure for SDS degradation using HC effect of varying SDS concentration and subsequent degradation studies addition of H | First report on surfactant degradation using hydrodynamic cavitation HC based AOP. Systematic understanding of effect of operating parameters on HC performance. Nearly complete degradation of SDS in 60min using HC along with Fentons reagent. Higher efficiency on integrating HC with other AOPs like H. Fentons reagent. |
S1385894720317289 | Catalytic membranes have gained increasing interest in water treatment due to their improved performance on contaminants removal fouling mitigation and cleaning efficiency . The reactive species generated in the catalytic membrane system play a critical role in the process . However the performance of SO | Catalytic ceramic membrane was prepared through filtration of catalyst suspension. SO. was confirmed as predominant in the PMS catalytic membrane system. Increased NOM removal and decreased flux decline were observed with catalytic membrane. Enhanced PMS cleaning efficiency was obtained with fouled catalytic membrane. |
S1385894720317290 | Poor efficiency is considered as the adverse limitation of the development of microbial fuel cells . Increasing the catalytic activity of oxygen reduction reaction for air cathode catalyst is believed to be a superior approach to improve the efficiency of MFCs . Due to the attribute of high efficient and easily achieved the broccoli like Co Ni | Co doped Ni. P was firstly tested to catalyze oxygen reduction in MFCs. Co Ni. P hybrid with AC synergistically enhanced oxygen reduction efficiency. The synergy of Ni with Co in bimetal phosphide was beneficial for ORR. A MPD of 1814mWm. were achieved with Co Ni. P AC 2 98 higher than bare AC. |
S1385894720317307 | Efficient charge separation and high photo stability are crucial for sustainable solar to hydrogen energy conversion over photocatalysts . Here we describe a facile synthetic strategy to construct the novel direct Z scheme tandem heterojunction consisting of the zero dimensional ultrafine cadmium sulfide nanograins and the two dimensional ultrathin tungsten trioxide tungsten disulfide WO | A novel direct Z scheme WO. WS. CdS tandem heterojunction was synthesized. The photocatalytic H. evolution rate of optimized hybrid was 14.34mmoLh. An outstanding apparent quantum efficiency of 22.96 at 435nm was achieved. The direct Z scheme channels boost the spatial charge separation and transfer. |
S1385894720317319 | In this study kinetic behavior of sulfamethoxazole degradation in Fe tetrapolyphosphate Air system was investigated which was susceptible to Fe dosage Fe TPP molar ratio and pH value . Intermediate | Oxygen activation induced by Fe II was greatly enhanced by tetrapolyphosphate. and H. were the key precursors responsible for the production of. OH. The dominant oxidant was. OH but not Fe IV based on multiple lines of evidence. A mechanism based kinetic model was developed. Pollutants removal and rate constants of key reactions were predicted by the model. |
S1385894720317320 | The accumulation of antibiotics in the environment fosters the evolution of antibiotic resistance genes that cause adverse an ecological impact . In this study we fabricated a thermoplastic polyurethane polysulfone composite membrane with a low structural parameter and high mechanical strength using electrospinning . UiO 66 NH | Electrospun membranes increased 1.4 times of tensile strength and exhibited low S 248m after adding TPU. UiO 66 NH. interlayer incorporated the UTFN FO membrane showed high water flux. UTFN membrane could efficiently remove TC and TRGs simultaneously. The co rejection mechanism of UTFN membrane was elaborated. |
S1385894720317332 | Developing efficient nonprecious metal electrocatalysts is urgently needed to promote the sluggish kinetics of oxygen evolution reaction . Transition metals based layered double hydroxides have been considered as highly active OER catalysts while low conductivity and limited active site exposures hinder their further applications . Herein CoNi LDH Ti | CoNi LDH Ti. is obtained by using Ti. NF as support to load CoNi LDH via electrodeposition. CoNi LDH Ti. displays prominent OER activity and durability in alkaline electrolyte. Binding strength of intermediates is optimized by strong interaction of CoNi LDH and Ti |
S1385894720317356 | Metal free carbonaceous materials have increasingly attracted worldwide attention owing to their unprecedented properties in catalytic elimination of environmental pollutants in water . Nevertheless the surface functionality dependent catalytic efficacy and activation mechanism for ferrate Fe | Carbonaceous solid induced enhancement in oxidation of pharmaceuticals by ferrate. Carbonyl groups at surfaces of hydrochar and graphene oxide involve in enhancement. Magnitude of enhanced oxidation depends on moieties of micropollutant. Increased amounts of generated Fe. Fe. result in increased oxidation. Hydrochar has superior reusability in activating Fe. to oxidize micropollutant. |
S138589472031737X | Antibiotics a power tool to combat pathogenic bacterial infection have experienced their inability to kill drug resistant bacteria due to the development of antibiotic resistance . As an alternative nanostructured mechanical bactericidal surfaces may hold promise in killing bacteria without triggering antimicrobial resistance however accumulation of dead bacteria would greatly reduce their antimicrobial activity . In this study for the first time we report a surprising discovery that the lotus leaf well known for its superhydrophobicity has demonstrated not only strong repelling effect against bacteria but also bactericidal activity | The lotus leaf demonstrated not only repellency against bacteria but bactericidal activity. The bactericidal mechanism has been proved to be a cell rupturing effect. A hierarchically structured surface was designed and prepared. The artificial surface displayed synergistic antimicrobial activity based entirely on physical mechanism. The structured surface has the great advantage in maintaining long term effectiveness in antimicrobial activity. |
S1385894720317411 | Current practice for C phycocyanin extraction from fresh biomass is greatly perishable so dried biomass is preferable for longer storage life and saving spaces for small scale industries . However the resistance of dried biomass towards cell disruption is higher compared to fresh biomass . Therefore this work aims to develop an effective technique for the extraction of CPC from dried | Pigment protein complex was recovered from. C phycocyanin and allophycocyanin were successfully extracted using sonoprocessing. Optimization of ultrasound enhanced the purity and yield of the targeted compound. A purification factor of 5.23 and recovery of 95.1 of c phycocyanin was obtained. C phycocyanin was characterized using SDS PAGE analysis. |
S1385894720317423 | Combination chemotherapy such as doxorubicin plus cisplatin based on co assembling nanoparticles plays increasingly important role in the clinical treatment of cancer . But their synergistic antitumor effect is highly limited by unmatched release behavior of Dox and cisplatin . To enhance the synergistic antitumor effect of Dox and cisplatin herein an acidic triblock polymer | nanogels are programmatically fabricated via a simple mixing approach. nanogels show sol gel transition ensuring long term retention in tumor. nanogels exhibit sustained and parallel release of Dox and cisplatin. nanogels show best synergistic antitumor and antimetastasis effects. nanogels reduce toxicity of Dox and cisplatin on normal tissues. |
S1385894720317435 | The deactivation of denitrification catalysts has attracted widespread attention whereas little is known about the poisoning effect of selenium species to date . In this study the influence of element Se Se | Se species can cause different types of deactivation for V. MoO. TiO. catalyst. Se. and SeO. react with V. leading to its chemical denaturation. CaSeO. causes physical blockage of the catalyst with little chemical interaction. MoO. can alleviate the catalyst deactivation by Se. and SeO |
S1385894720317459 | Diabetics face multiple long term health complications and diabetic foot ulcers affect approximately 1520 of the diabetic population . The high disability rate of these patients results in substantial mental burden and economic pressure to the individuals as well as the societies . Here we report a therapeutic integrin binding pro survival peptide engineered silk fibroin nanosheet that can regulate angiogenesis and promote diabetic ulcer healing . The nanosheet with thickness less than 100nm is highly transparent and flexible and it can firmly adhere to the biological tissue surfaces in underwater environment . The presence of integrin binding pro survival peptide in the nanosheet significantly upregulates the expression of angiogenesis genes and proteins of human umbilical vein endothelial cells . In the diabetic mouse model the peptide engineered nanosheet reveals significant acceleration of wound closure epithelialization and granulation tissue formation . These findings suggest that this functional nanosheet could be a promising therapeutic candidate for complicated diabetic ulcer healing . | Peptide engineered nanosheets were applied to treat diabetic wound ulcers. Functional nanosheets are highly transparent and flexible. Nanosheets can firmly adhere to tissue surface in wet environment. Nanosheets could upregulate HUVEC gene expression related to angiogenesis. The nanosheets accelerate diabetic wound closure and skin regeneration. |
S1385894720317460 | The experimental specific capacity of layered double hydroxide electrode is obviously lower than theoretical specific capacity due to its ordinary interlayer spacing . Therefore getting large interlayer spacing by big size anions intercalation to improve the capacity performance becomes a important research topic . In addition the quantitative relationship between interlayer spacing and capacitance performance has not been systematically revealed . In this paper we synthetised and regulated interlayer spacing of NiMn layered double hydroxide from 7.38 to 28.41 by adding different moles sodium dodecyl sulphate as intercalating agent using one step method and defined average interlayer spacing to describe more than one interlayer spacing . We found that specific capacity in three electrode system and capacitance of hybrid capacitor device are positively correlated with the size of the average interlayer spacing in NiMn layered double hydroxide . The sample with the biggest average interlayer spacing of 28.41 obtains the highest specific capacity of 325 290 258 209mAhg | Interlayer spacing of NiMn layered double hydroxides is regulated by SDS dose. Average interlayer spacing is defined to describe more than one interlayer space. Specific capacity of NiMn layered double hydroxide is positively correlated with the size of the average interlayer spacing. |
S1385894720317484 | As extracellular matrix mimics dynamic biointerfaces with reversible ligand presentation have shown great significance in the field of biology and medicine . However current systems are trapped in the monotony of bioactivity which makes it hard to mimic the multipotential of natural ECM . In this work we reported a dynamic biomaterial interface with optional and diversified bioactivities by the combination of reversible catechol boronate and bioorthogonal click chemistry . Due to the specificity and thoroughness of bioorthogonal reaction different types of biomolecules including small molecular saccharide macromolecular peptides and DNA aptamers could be on demand and reversible binding on biomaterial interfaces through sugar sensitive catechol boronate interactions . In this design the obtained dynamic biointerface showed biocompatible sugar responsiveness and enabled reversible presentation of diversified bioactivities exhibiting the multipotential to manipulate a variety of cell biomaterial interactions . Cell capture release experiments confirmed our dynamic biointerface could reversibly and selectively bind different cancer cells and even the bacterial microorganism . In short apart from the original significance in ECM mimicking the optional and diversified bioactivities on our developed dynamic biointerface will also show promising prospects in biomedical science in particular the cell isolation area for diagnostics and therapeutics . | Developed a multipotential dynamic biointerface platform. Reversible conjugation of diversified biomolecule. Biocompatible sugar responsiveness. Manipulate a variety of cell biomaterial interactions. |
S1385894720317496 | Excessive accumulation of mitochondrial reactive oxygen species triggers the vicious circle in development of environment induced dry eye disease . Thus mitochondria specific antioxidants that | Novel MitoQ NPs were prepared using charge driven self assembly strategy. MitoQ NPs improved mitochondria targeted antioxidant delivery. MitoQ NPs effectively acted as a mitochondria specific ROS scavenger. MitoQ NPs could inhibit environment induced DED. |
S1385894720317502 | Enrofloxacin is a highly toxic fluoroquinolone antibiotic widely used in a broad spectrum of human activities and therefore increased ENRO levels found in aquatic environments pose serious threats for human and livestock health . In this study a gasliquid nanosecond pulsed dielectric barrier discharge plasma reactor was used for the degradation of ENRO in aqueous solutions . The increase of pulse peak voltage and the pulse repetition rate up to a certain limit were found to enhance ENRO degradation efficiency degradation rate and energy yield . Under the optimum pulse voltage and pulse frequency ENRO was completely degraded after 20min with the corresponding energy yield being 1.1g kWh . Air and O | Gas liquid nsp DBD was used to degrade enrofloxacin in water. Complete enrofloxacin degradation with high energy yield of 1.1g kWh. The important role of. OH and. in the degradation process was confirmed. CaO. additive promoted degradation rate by 86. Degradation pathway of enrofloxacin was consistent with. OH and. involvement. |
S1385894720317514 | Dendrimer played a critical role of stabilizer in the synthesis of stable gold palladium and gold palladium nanoparticles . The metal nanoparticles micrographs showed well dispersed particles with an average diameter lesser than 3nm . Ferricyanide reduction was conducted as a redox prototype reaction to investigate the kinetic and electrochemical activities on the surface of metal nanocatalysts . Ferricyanide reduction was accurately monitored using the UVVis spectrophotometry . The Langmuir Hinshelwood and Butler Volmer approaches were applied to determine the kinetic and electrochemical rates on the metal nanocatalysts surface . The fastest chemical activity on the metal nanocatalysts surfaces led to negative activation energies . The activation energies from the kinetic process 19.742.74kJmol | Synthesis of well dispersed and stable metal nanoparticles encapsulated inside dendrimer. Ferricyanide adsorption and catalytic reduction on the surface of metal nanocatalysts. Kinetic activity description on the metal nanocatalyst surface according to the Langmuir Hinshelwood approach. Electrochemical activity on the surface of metal nanocatalyst investigated based on the Bulter Volmer approach. |
S138589472031754X | A one step and controllable strategy to prepare all polymer hybrid electret fibers is reported based on the coupling of polystyrene and polyvinylidene fluoride in electric response . The complementary dielectric properties between PS and PVDF generate dual system electret charges within PS PVDF fibers thereby improving the electret effect . The bi component all polymer electret fibers show enhanced electret property and structural continuity contributing to a N95 protective respirator with high filtration efficiency low air resistance and long service life . The fabrication of all polymer electret fibers solves the challenge of nanoparticle toxicity for existing polymer nanoparticle electret fibers . | A new method to enhance electret property without using nanoparticles is reported. All polymer electret PS PVDF fibers without nanotoxicity are prepared. Novel theory describing the electret mechanisms of electrospinning is proposed. The resultant electret fibers show competitive air filtration performance. |
S1385894720317587 | The instability of gas liquid two phase flow caused by bubble collision downstream in parallel microbranching T junctions is discovered and a strategy of splitting liquid feed stream in two for the prevention of bubble collision is proposed . The two main flow regimes of breakup and repartition of bubbles are observed and characterized under the slug flow and the phase distribution among five branches are studied . It is proved that for the breakup regime splitting liquid feed stream with appropriate proportion enhances the uniformity of the bubble size at the branches eliminating the instability caused by bubble collision and the phase distribution is improved and more stable . The influence of the flow rate and viscosity of fluids on the gas liquid two phase distribution is studied . A proportional relationship is given to predict bubble volumes and to reveal the gas distribution among branches with liquid feed stream split . | Stability and distribution of gas liquid flow in parallel T junctions are focused. Instability caused by bubble collision is prevented with the liquid feed split. Gas liquid two phase distribution among branches is improved and stabilized. A proportional law is proposed to reveal the law of gas distribution in branches. |
S1385894720317599 | The Organometallic complex consisting of iron and 3 amino 2 hydroxypropanesulfonic acid ligand is newly suggested as negative active species for redox flow battery while ferrocyanide | Fe DIPSO consisting of Fe and DIPSO ligand is suggested as negative active species. Fe DIPSO and Fe CN. are selected as redox couple for RFB. Fe DIPSO has a strong resistance against the reduction to Fe s . Cell voltage of the redox couple is 1.37V. RFB using new redox couple has 14.4 AhL. capacity and 93.2 mWcm. power density . |
S1385894720317605 | Rational design of catalyst and reduction process are significant for the treatment of Cr containing wastewater . In this work for the first time g C | A novel g C. modified bio Fe III hydroxysulfate composite was synthesized. Efficient photoreduction of Cr VI by g C. @bio Fe III hydroxysulfate. Photogenerated Fe II e. and. were identified as reactive reducing species. The possible mechanism of photocatalytic reduction of Cr VI was proposed. |
S1385894720317617 | With the enlarging application of thermal conductive composites in aviation field and so on not only high in plane thermal conductivity mechanical flexibility and electrical insulation but also thermal stability and fire resistance are critically desired . Although with outstanding advantages such as light weight good flexibility and processability the intrinsic flammability and high temperature intolerance are Achilles heel for most polymer based thermal conductive composites which severely hinders their application in harsh environments . To solve this issue we here proposed a facile strategy to prepare flexible all inorganic composite films inspired by the recent progress of using inorganic nanowires to prepare fire resistant paper . In this design one dimensional hydroxyapatite nanowires synthesized via solvothermal method and two dimensional boron nitride nanosheets prepared by liquid phase exfoliation were integrated together by vacuum assisted filtration to form layer structured composite films in which HAPNWs provided flexibility and BNNSs offered orientational thermal conductive pathways . When BNNSs loading content was 30wt the in plane TC value of the resultant composite film reached 6.4Wm | HAPNWs were used as flexible matrix to prepare all inorganic thermal conductive films. BNNSs were integrated with HAPNWs through facile vacuum assistant filtration. The resultant composite films possess good flexibility and fire resistant ability. Significant enhancement of in plane thermal conductivity was achieved. |
S1385894720317629 | Three ionosilica materials have been tested for low temperature thermochemical storage of energy under mild conditions of adsorbent regeneration and saturation . The previous synthesis procedures were adapted to prepare materials possessing an organosilica framework with silylated cationic blocs and Cl | Comparison between ionosilicas with compensating chloride and sulfate anions. Study of surface hydration dehydration of ionosilicas under various conditions. Improved heat release by sulfate type ionosilicas regenerated under mild conditions. |
S1385894720317642 | Three dimensional basswood materials were successfully applied to construct molecularly imprinted nanocomposite membranes for the first time . Importantly in this work the TiO | Basswood was used as the supporting membrane for the preparation of imprinting materials. TiO. TC imprinted surface was designed and prepared. Well designed multilevel hierarchical 3DW MIMs were first proposed and applied as selective separation membranes. High rebinding capacity and permselectivity performance could be simultaneously obtained. |
S1385894720317654 | A novel oyster shell and lignite modified zeolite fixed bioreactor incorporated with intermittent light illumination process was developed for alleviating ammonia inhibition to improve efficiency of ammonium rich anaerobic digestion . The SEM morphology of the newly synthesized OLMZ showed porous structure and rough surface with increased BET surface area compared to unmodified zeolite . After modification with oyster shell and lignite the metal cations content in OLMZ increased significantly and the ammonia adsorption capability of OLMZ improved by 1.3 folds compared to UMZ . Thus the results suggested that OLMZ is a better adsorbent than UMZ for ammonia uptake . Furthermore the pseudo second order kinetics and the isotherm results verified the adsorption of ammonia on OLMZ was dominated by ion exchange with high affinity for ammonia uptake . As for the anaerobic digestion the light illuminated OLMZ fixed bioreactor process resulted in the highest methane yield of 37230mL g DOC | Oyster shell and lignite modified zeolite OLMZ was successfully synthesized. Intermittent illumination aided OLMZ fixed bioreactor OLMZ I was developed. Superior CH. yield of 37230mL g DOC. was achieved in ammonium rich fermentation. Mechanism of OLMZ I process for high efficient ammonium rich AD was proposed. The developed process shows great potential for bioconversion of ammonium rich waste. |
S138589472031768X | By changing the electrical bias imposed on a Ni catalyst attached to an external circuit the selectivity of catalytic formic acid decomposition is shown to changefavoring CO | Electric field enhanced catalytic decomposition of gas phase formic acid. Reaction used to estimate applied field strength at catalyst active site. COMSOL model used to predict field structure across Ni foam catalyst. Applied field is visualized by electron microscopy differential image brightness. |
S1385894720317691 | This paper focuses on a novel one step co hydrolysis synthesis strategy of silicon modified N doped titanium dioxide nanocrystals and its application in the visible light photocatalysis of chromium at g L | The N doped TiO. microspheres and Si N TiO. nanocrystals were synthesized through the one step hydrolysis method. The cross linking state between nanocrystals increases the oxygen vacancy concentration and provides more transport channels. The positively charged nanocrystals had a repulsive effect on the cationic pollutants. Removal efficiency of 1.0g L. Cr VI in 120min was as high as 53 . |
S1385894720317745 | A separator is an indispensable part of a lithium ion battery and can seriously affect the battery performance . This study demonstrates the feasibility of a non solvent induced phase separation mechanism for the preparation of lithium ion battery separators . Based on the mechanism polyacrylonitrile solutions were prepared with different proportions of dimethylformamide and tetrahydrofuran for electrospinning to prepare separators . The surface and interior of the fibers of the electrospun membranes show different morphologies which make a difference in the performance of batteries based on these separators . The property mixing of DMF and THF can cause microporous structures on the surface and inside of the electrospun fibers and some pores are internal and external interconnected . This improves the porosity ionic conductivity 1.96mScm | Electrospun PAN separator for LIB based on the NIPS was fabricated. The fiber of the separator has pores on the surface and interconnected pores inside. The structure and function of the fiber membrane are related to the THF. The separator can have good porosity and electrolyte absorption. The separator can have good charge and discharge performance. |
S1385894720317757 | Propelled by the demand of cost effective and sustainable electrocatalysts non precious catalysts are beginning to spark tremendous interest . Among them carbon based materials are able to load various active sites ranging from metallic and | A double shell hierarchical porous nanosphere Fe. has been prepared. Fe. possess three synergistic active sites Fe C Co C and pyridinic N. Fe. exhibits excellent oxygen reduction reaction ORR performance. |
S1385894720317769 | This contribution describes sulfoximine derivatives as a novel type of acceptor for efficient thermally activated delayed fluorescence emitters . SFI presents a unique advantage by facile introduction of versatile functionalities on its secondary amine which allows delicate manipulation of TADF properties . In a proof of principle study three green yellowish green TADF emitters namely | A new building block with versatile functionality for constructing TADF emitters. Facile molecular engineering to facilitate RISC process and boost. TADF OLEDs with EQE up to 20.4 and small efficiency roll off. |
S1385894720317770 | It is highly desirable to construct advanced adsorbents with superb adsorption and visual detectivity of arsenate from complex environmental systems . In this work a novel kind of iron alkoxide for simultaneous sorptive removal and colorimetric detection of arsenate from environmental water is reported . This adsorbent displays a three dimensional flower like structure with a specific surface area calculated as 93.13m | Three dimensional flower like multifunctional adsorbents were prepared. Simultaneous sorptive removal and colorimetric detection of arsenate was realized. High adsorption capacity of iron alkoxide towards arsenate was obtained. Sensitive and selective detection towards arsenate using iron alkoxide was achieved. |
S1385894720317782 | As an environmental water treatment technology membrane technology has been prevalent for water purification in the closed membrane reactor system . Can membrane technology be applied as an ecological water treatment technology for water purification in the open natural water system In this study the feasibility of water purification in the open natural water system with gravity driven biomimetic membrane was explored focusing on the filtration driving force for providing the superior filtration efficiency and stability of long term operation for improving the practicability . During GDBM preparation process laccase was immobilized by carrier then they were filtrated and deposited on microfiltration thus a biomimetic layer with high permeability was formed . Its filtration process could be driven by the gravity of its own hydrostatic height . Above all activated carbon graphene oxide and carbon nanotube were utilized as carrier materials . Because of more stable immobilization effect for laccase and greater permeable structure GO GDBM possessed the better BPA removal rate and higher permeate flux . It even reached 72.1 L m | Gravity driven biomimetic membrane GDBM was used for water purification in open natural water system. GDBM driven by gravity has a biomimetic layer composed of laccase and carrier material on MF. GDBM has a permeate flux of up to 70 L m. at only 12cm of hydrostatic height. GDBM owns a good ability to resist the change of process conditions. GDBM possesses a high stability 55 70 BPA removal and 27 42 LMH during 30days operation. |
S1385894720317794 | Hg pollution to aqueous system poses hazardous effect to human health . The design of new adsorbent with enhanced adsorption selectivity and capacity is a great challenge for the decontamination of aqueous Hg . Herein Schiff base decorated PAMAM dendrimer magnetic Fe | Schiff base functionalized PAMAM dendrimer magnetic Fe. composite were synthesized. The as prepared adsorbents exhibits excellent adsorption selectivity for Hg II . The adsorbents display good reusability and can be reused for several cycles. Adsorption mechanism was revealed based on experiment and DFT calculation. |
S1385894720317812 | Combined partial denitrification and anammox process has received growing interest for treating wastewaters with high nitrate concentrations but the underlying molecular mechanisms are currently poorly understood due to the complexity in bacterial community composition and functionality of the coupled system . This study applied metagenomic and metatranscriptomic approaches to gain comprehensive and deep insights into the nitrogen metabolic pathways in a lab scale partial denitrification anammox bioreactor showing stable nitrogen removal . Stoichiometric analysis showed that most of nitrogen was removed by the coupled system but dissimilatory denitrification also contributed to nitrogen gas production . The latter was further evidenced by | Simultaneous partial denitrification and anammox process showed higher nitrogen removal performance. Metagenomic and metatranscriptomic analyses comprehensively uncover nitrogen metabolic pathways of the process. was identified as the high abundant and active anammox bacteria. DNRA process was active in the cells of. A B C genes were mainly responsible for nitrate reduction in genus |
S1385894720317824 | Development of recyclable and self repairing phase change materials which enable renewable energy storage and sustainable development is critical for the efficient utilisation of solar energy . Hence we herein fabricated form stable reversible cross linked polyurethane phase change materials composites with excellent recyclability outstanding self healing ability and superior photo thermal conversion efficiency . Furan modified polydopamine particles which serve as cross linkers and photo thermal fillers were incorporated into maleimide terminated polyurethane phase change materials via a DielsAlder reaction . Sunlight irradiation experiments revealed that f PDAPs addition significantly improved the storage efficiency and photo thermal conversion of DPCM x thanks to the superior solar to thermal energy conversion performance of the f PDAPs . Additionally the existence of both reversible DA networks and f PDAPs ensured that DPCM x composites had excellent near infrared induced self healing abilities thermal induced recyclable properties and solid state plasticity . Meanwhile the recovered DPCM x composites could largely maintain their original mechanical properties and thermal energy storage capacity . Such cross linked polyurethane PCM composites exhibited excellent self healing properties under NIR irradiation . Due to their outstanding recyclability interesting energy storage ability and form stability they have enormous potential for applications in the fields of solar to thermal energy conversion and storage . | The polyurethane composites with multiple functions were successfully prepared. The reversible network endowed the composites with ability to heal and recycle. The composites had superior energy storage ability and photo thermal conversion. |
S1385894720317836 | Reprocessing of waste plastic has been extensively studied . Herein a facile and efficient method for solving the plastic recycling crisis was developed using micro wave assisted hydrolysis of poly into terephthalic acid . Previously developed acid or base catalysts are soluble in reaction media and difficult to separate after the reaction . ZSM 5 based zeolites which are simply recoverable and facilely re generable catalysts with Brnsted and Lewis acidic sites were used herein as an acidic catalyst for the PET hydrolysis reaction . Controlling the Brnsted and Lewis acidic site concentration in the ZSM 5 zeolite by changing the Si Al ratio of the zeolite framework and counter ion species was applied . The reaction kinetics and activation energy of the PET hydrolysis reaction in the presence of the developed catalyst were studied and compared with catalyst free conditions . Based on this investigation the correlation between Brnsted and Lewis acidic sites in ZSM 5 based catalysts and PET depolymerization yield was identified . | Microwave assisted PET depolymerization by ZSM 5 based catalyst. PET depolymerization with low activation energy by ZSM 5 based catalyst. Remarkable persistency and easy recovery of ZSM 5 based catalyst. The mechanism of PET depolymerization into TPA. |
S1385894720317848 | Rational design of highly active bifunctional catalysts with satisfactory cost performance as alternatives to precious metals for oxygen reduction and evolution reaction still poses challenges . Herein highly catalytic active atomic Fe sites anchored to hollow carbon nanospheres Fe N | Synthesis of a new Fe containing ionic liquid Fe IL . Construction of the coreshell precursor structure. One step pyrolysis for the controlled synthesis of Fe Nx sites. Abundant Fe N4 and Fe3 species with high catalytic activity. Excellent electrochemical performance of a rechargeable Zn air battery. |
S138589472031785X | Soil co contaminated with heavy metals and pesticides has caused large global environmental issues . The interaction of heavy metals and pesticides make the contamination situation more complicated . It is crucial to remediate the co contaminated soil by heavy metals and pesticides . Bioremediation has the advantages of high efficiency low cost easy available harmless for the ecosystem and high public acceptance which has been widely developed in remediation of combined pollution of heavy metals and pesticides . This paper reviews the bioremediation applications of combined contaminated soil with heavy metals and pesticides . Abiotic and biotic factors can all affect the bioremediation of heavy metals and pesticides . Meanwhile the present review summarizes the bioremediation mechanisms of heavy metals and pesticides by microorganisms and plants . The effectiveness evaluation methods of soil remediation are also reviewed . Based on above this review proposes the future investigations required for this field . | The bioremediation applications of co contaminated soils with metals and pesticides were reviewed. Factors affecting bioremediation of heavy metals and pesticides were discussed. The bioremediation mechanisms and effectiveness evaluation methods of co contaminated soil were introduced. Potential research needs for this field were proposed. |
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