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《Journal of Hefei University of Technology(Natural Science)》 2006-06
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Study on the preparation of TiO_2/SiO_2 composite powder and its photocatalytic activity

FENG Na,ZHENG Zhi-xiang,XU Guang-qing,TANG Wen-ming,WU Yu-cheng(School of Material Science and Engineering,Hefei University of Technology,Hefei 230009,China)  
The TiO_2/SiO_2 composite powder made by the sol-gel technique was analyzed by means of XRD and FT-IR.The effects of composition and heat treatment on the transformation temperature of the anatase phase into the rutile phase as well as the effect of doping of SiO_2 on the photocatalytic degradation of methyl orange were examined.The investigation indicate that titanium dioxide particles were highly dispersed and the Ti-O-Si tetrahedral network was formed in the TiO_2/SiO_2 complex particles.The catalyst has a large specific surface area and high photocatalytic reactivity due to more effective separation of electrons and holes,resulting in enhanced degradation of methyl orange.
【CateGory Index】: TB383.3
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