In FIG 3, there is the state of {HEAD ~ the functional chelating agent} 104 chelating {TAIL ~ the metal atom} of the metal oxide matrix 103 in the pendant shape as in FIG 1 
chelating
In FIG 3 , there is the state of { HEAD ~ the functional chelating agent } 104 chelating { TAIL ~ the metal atom } of the metal oxide matrix 103 in the pendant shape as in FIG 1
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH