Abstract
Poly (allylamine)-silica composites (PAA/SiO2) was prepared via CPTCS as coupling agent and PAA as modifier. The structure and adsorption properties of silica gel, CPTCS-SiO2 and PAA/SiO2 were determinated by FTIR, structural analysis, TG analysis and adsorption test. The results show that PAA/SiO2 had excellent adsorption capacities for Cu (II), Pb (II) and Ni (II) in aqueous solutions. Its adsorption capacities can reach 0.972mmol/g for copper ion at experimental conditions. Besides, PAA/SiO2 also possessed excellent stability in the flow tests.
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