the present invention relates to a method for synthesizing mesoporous aluminosilicate or pure - silica molecular sieves with newly hierarchical morphologies by adding suitable amount of alcohol . there are hollow sphere , hollow sphere with a pillar in it and solid sphere by adjusting the al 2 o 3 / sio 2 and tetraethylorthosilicate / sio 2 ratio . the wall of the micron - sized spherical structure consisted of well - ordered cylindrical pores of nanometer size . the dimensions and the morphologies of the mesoporous structure are adjustable by varying the reaction components as the water content , the silicon / surfactant ratio and the reaction and the hydrothermal temperature .