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SnO2TiO2复合半导体纳米薄膜的研究进展
引用本文:尚静,谢绍东,刘建国.SnO2TiO2复合半导体纳米薄膜的研究进展[J].化学进展,2005,17(6):1012-1018.
作者姓名:尚静  谢绍东  刘建国
作者单位:北京大学环境学院,环境科学系,北京,100871
基金项目:国家自然科学基金资助项目(No.20407002)
摘    要:本文概述了SnO2TiO2复合半导体纳米薄膜的发展历史和研究现状,对比分析了“混合”、“核壳”和“叠层”3种复合薄膜的结构和性能特点,着重论述了叠层结构的SnO2/TiO2复合薄膜的光电化学和光催化特性。结合作者的研究工作,探讨了SnO2/TiO2双层复合薄膜上下层厚度对其光催化活性的影响,指出复合薄膜光催化活性的提高可归因于电子从TiO2向SnO2的迁移。最后对SnO2/TiO2复合薄膜的局限性和发展潜势做一简要分析,强调了该复合薄膜本身的应用特点。

关 键 词:SnO2  TiO2  复合半导体薄膜  光催化
文章编号:1005-281X(2005)06-1012-07
收稿时间:2004-10
修稿时间:2005-02

Progress in SnO2TiO2 Composite Semiconductor Nanofilm
Shang Jing,Xie Shaodong,Liu Jianguo.Progress in SnO2TiO2 Composite Semiconductor Nanofilm[J].Progress in Chemistry,2005,17(6):1012-1018.
Authors:Shang Jing  Xie Shaodong  Liu Jianguo
Institution:Department of Environmental Sciences, College of Environmental Sciences, Peking University, Beijing 100871, China
Abstract:The research history and current focus of SnO2TiO2 composite semiconductor nanofilms are summarized in this paper. Three types of the nanofilms, mixed, core-shell and layer-stacked, are thoroughly elucidated and compared in terms of structure and property. In particular, the optoelectronic and photocatalytic properties of SnO2/TiO2 bilayer nanofilm are emphasized. The dependence of photocatalytic activity of this nanofilm on the TiO2 or SnO2 layer thickness is discussed. The increased photocatalytic activity of SnO2/TiO2 composite nanofilms can be attributed to the improvement of the efficiency of electron transferring from TiO2 to SnO2. The development potential and limitation of the SnO2/TiO2 composite nanofilms are briefly analyzed.
Keywords:SnO2  TiO2  composite semiconductor films  photocatalysis
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