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《Chemical Research In Chinese Universities》 2003-09
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Structure Influence of Fe~(3+) Doped TiO_2/SiO_2 Film on the Photocatalytic Properties

FU Hong-Gang , WANG Jian-Qiang, REN Zhi-Yu, YAN Peng-Fei, YU Hai-Tao, XIN Bai-Fu, YUAN Fu-Long (Institute of Chemistry and Chemical Engineering, Heilongjiang University, Harbin 150080, China; Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China)  
Fe3+ ion doped titanium dioxide films coated on silica(Fe3+-TiO2/SiO2) were prepared by sol-gel method. The obtained films were more effective than TiO2 nano-size powder in decomposing Rhodamine B under irridation with Xe lamp. In the Fe3+ doping system, the optimum value of the Fe3+/Ti4+ (atomic ratio ) was 0. 03 % for the photocatalytic degradation of Rhodamin B. The experimental results suggested that the photocatalytic reactions with the titanium dioxide nanosize powder and film as the catalyst proceed in two different degradation mechnisms. By the characterization using XRD, SEM, Raman, and FTIR technologies, we can conclude that the surface layer structure of TiO2 film on silica and the formation of Ti-O-Si bond play important roles with the increasing of degradation efficiency, and result in two different decomposition mechanisms for film and power.
【Fund】: 国家自然科学基金(批准号:20171016 20271019);; 黑龙江省杰出青年科学基金(2002);; 教育部科学技术研究重点项目(2002);; 黑龙江省普通高等学校骨干教师创新能力资助计划(2001);; 黑龙江省自然科学基金(批准号:B00006)
【CateGory Index】: O643.3
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