| TiO2/SnO2复合薄膜光诱导超亲水性机理的XPS研究 |
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| 引用本文： | 杨喜昆,柳清菊,朱忠其,李翼,张瑾,王绍华.TiO2/SnO2复合薄膜光诱导超亲水性机理的XPS研究[J].功能材料,2007,38(1):101-104. |
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| 作者姓名： | 杨喜昆 柳清菊 朱忠其 李翼 张瑾 王绍华 |
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| 作者单位： | 1. 昆明理工大学,分析测试研究中心,云南,昆明,650051
2. 云南大学,材料科学与工程系,云南,昆明,650091 |
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| 基金项目： | 国家自然科学基金
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教育部跨世纪优秀人才培养计划
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云南省自然科学基金
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云南省教育厅资助项目 |
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| 摘 要： | 利用X射线光电子能谱仪对用溶胶-凝胶法制备的TiO2/SnO2复合薄膜的表面化学状态进行分析,结果表明:热处理及紫外光照前后,薄膜表面的化学状态均发生了变化,薄膜表面的碳氧或过氧化物基团增加,这些基团具有较强的活性,通过氢键和水中的极性基团作用,产生超亲水性.此外,掺杂SnO2提高了TiO2/SnO2复合薄膜的表面能,改变了薄膜表面的化学结构,使TiO2薄膜获得了较好的亲水性能和催化活性.
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| 关 键 词： | TiO2/SnO2复合膜 亲水性 活性基团 |
| 文章编号： | 1001-9731(2007)01-0101-04 |
| 修稿时间： | 2006-03-28 |
XPS study on mechanism of photo-induced super-hydrophilicity of TiO2/SnO2 composite film |
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| YANG Xi-kun,LIU Qing-ju,ZHU Zhong-qi,LI Yi,ZHANG Jin,WANG Shao-hua.XPS study on mechanism of photo-induced super-hydrophilicity of TiO2/SnO2 composite film[J].Journal of Functional Materials,2007,38(1):101-104. |
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| Authors: | YANG Xi-kun LIU Qing-ju ZHU Zhong-qi LI Yi ZHANG Jin WANG Shao-hua |
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| Abstract: | X-ray photoelectron spectroscopy(XPS)is used to determine the surface chemical states of TiO_2/SnO_2 composite thin-films which were prepared on soda-lime glass with sol-gel method.The results show that the surface chemical states of TiO_2/SnO_2 composite thin-films have changed after heat-treatment and UV illumination,and that a great deal of oxygen-containing groups or peroxides are produced on TiO_2 thin-film surface.Oxide active groups,generated during this process,react with polar groups in water by hydrogen bonds and lead to super-hydrophilicity.In addition,the doping of SnO_2 into TiO_2 can enhance surface energy and change the surface chemical structure of TiO_2/SnO_2 composite thin films,which make thin-film gain better hydrophilicity and higher photocatalytic activity. |
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| Keywords: | TiO2/SnO2 composite film hydrophilicity active groups |
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