| 担载材料对TiO2薄膜光催化活性的影响 |
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| 引用本文： | 邱健斌,曹亚安,马颖,管自生,姚建年.担载材料对TiO2薄膜光催化活性的影响[J].物理化学学报,2000,16(1). |
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| 作者姓名： | 邱健斌 曹亚安 马颖 管自生 姚建年 |
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| 作者单位： | 1. 福建师范大学化学系,福州350007
2. 中国科学院化学研究所分子科学中心,北京100080 |
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| 基金项目： | 国家自然科学基金!59620167，中国科学院资助 |
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| 摘 要： | ＴＩＯ２薄膜催化剂光催化治理大气和水污染，具有实际应用的前景，受到科学界的高度重视“－‘’．实验结果发现，担载材料对膜的催化活性有很大影响”’，如采用玻璃、不锈钢。石英作为ＴＩＯ。膜的载体时，由于界面离子扩散作用的不同，使得膜的光催化活性有很大的差异...
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| 关 键 词： | TiO_2薄膜 担载材料 光催化 表面光电压谱（SPS） |
Effect of Substrates on Photocatalytic Activity of TiO2 Films |
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| Qiu Jianbin,Cao Yaan,Ma Ying,Guan Zisheng,Yao Jiannian.Effect of Substrates on Photocatalytic Activity of TiO2 Films[J].Acta Physico-Chimica Sinica,2000,16(1). |
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| Authors: | Qiu Jianbin Cao Yaan Ma Ying Guan Zisheng Yao Jiannian |
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| Abstract: | Tio_2 nanocrystalline films were prepared on glass, ITO and p-Si substrates.Degradation of Rhodamine B was used to assess the Photocatalytic activity of the films. It wasfound that photocatalytic activity of TiOZ films on ITO and p-St are higher than that on glass, andthe film grown on ITO is the best. In addition, crystalline phases and surface morphology of TiO_2films were also affected by different substrates. Surface Photovoltage Spectra was used to analyzesurface states and energy levels of the films. Separation of photogenerate electrons and holes waspromoted due to matching of the energy levels between TiO_2 films and ITO as well as p-Si. Highphotocatalytic activity was then obtained because more photogenerate electrons and holes took partin photocatalytic reaction on TiO_2 suifaces. |
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| Keywords: | TiO_2 films Substrates Photocatalysis Surface photovoltage spectra(SPS) |
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