Authors: Zijie Xu Lihua Gan Yunyan Jia Zhixian Hao Mingxian Liu Longwu Chen
Publish Date: 2007/01/10
Volume: 41, Issue: 3, Pages: 203-207
Abstract
A method to prepare silicatitania aerogellike balls STABs with photocatalytic activity was reported Silicatitania sol was prepared by mixing selfmade titania sol with commercial silica sol Silicatitania gel balls were prepared by balldropping method BDM and solgel process The mechanical strength of gel balls is obviously improved by immersing them in TEOS/alcohol solution before the start of gel drying procedure These strengthened wet gel balls were dried at ambient pressure and STABs with small shrinkage were obtained Characters of porous structures of STABs were characterized by transmission electron microscope TEM and BrunauerEmmettTeller BET method STABs also display excellent photocatalytic activity for the degradation of methylene blue as a simulated aqueous organic pollutant in waste water
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