| SnO2TiO2 复合半导体纳米薄膜的研究进展 |
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| 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):0. |
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| 作者姓名： | 尚静 谢绍东 刘建国 |
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| 作者单位： | 北京大学环境学院 环境科学系 北京100871 |
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| 基金项目： | 国家自然科学基金资助项目 No.20407002 |
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| 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。
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| 关 键 词： | SnO2 TiO2 复合半导体薄膜 光催化 |
| 收稿时间： | 2004-10-01 |
| 修稿时间： | 2005-02-01 |
Progress in SnO2TiO2 Composite Semiconductor Nanofilm |
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| Shang Jing,Xie Shaodong,Liu Jianguo.Progress in SnO2TiO2 Composite Semiconductor Nanofilm[J].Progress in Chemistry,2005,17(6):0. |
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| Authors: | Shang Jing Xie Shaodong Liu Jianguo |
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| Institution: | Department of Environmental Sciences,College of Environmental Sciences,Peking University,Beijing 100871,China |
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| 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 nanofilmon 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. |
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| Keywords: | SnO2 TiO2 composite semiconductor films photocatalysis |
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