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《Acta Physico-chimica Sinica》 2001-03
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Coupling Effect TiO_2/SnO_2 Compound Semiconductor Photocatalyst

Li Dan-Zhen Zheng Yi Fu Xian-Zhi Liu Ping(Research Institute of Photocatalysis,Fuzhou University,Fuzhou 350002)  
/TiO_2 catalysts were prepared by microwave,composite and conventional methods and characterized by X-ray diffraction (XRD),N2 sorption analysis applying BET method,UV-Vis diffuse reflection spectroscopy(DRS) and laser Raman spectrum.The effect of different preparation methods on photocatalytic oxidation of C2H4 in air stream was studied.The results showed that the photocatalytic activity was obviously increased by the microwave method.The conversion of ethylene was 80% contrast to those of composite and conventional methods being only 58% and 41% ,respectively.The catalyst by microwave method exhibited higher content of anatase,higher specific surface area,larger band gap.The Raman scattering shifted to low wave number direction helped to increase the transition probability of photon-generated electrons and improved photoefficiency.
【Fund】: 国家自然科学基金资助项目!(29843003);; 福建省自然科学基金!(D0020003);; 高等学校骨干教师资助计划资助
【CateGory Index】: O643.3
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