| Ag-TiO_2复合膜的制备及光催化性能 |
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| 引用本文： | 钟俊波,马迪. Ag-TiO_2复合膜的制备及光催化性能[J]. 四川理工学院学报(自然科学版), 2010, 23(2): 194-197,201 |
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| 作者姓名： | 钟俊波 马迪 |
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| 作者单位： | 四川理工学院化学与制药工程学院,四川,自贡,643000 |
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| 基金项目： | 四川省教育厅青年基金，四川理工学院博士启动基金 |
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| 摘 要： | 以载玻片为载体,用溶胶-凝胶法制备了含银量为1.0%的Ag-TiO2复合膜,并且考察了复合膜光催化脱色甲基橙溶液的催化性能。结果表明:复合膜焙烧温度为450℃时催化活性最好,TiO2呈锐钛型,Ag-TiO2复合膜光催化性能是TiO2膜的2.25倍;低pH值时复合膜催化活性较好,当甲基橙浓度≤10 mg/L时,光催化脱色反应为准一级反应,而且可以用Langmuir-Hinshelwood方程描述。复合膜使用15小时催化活性没有降低。
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| 关 键 词： | TiO2 光催化脱色 甲基橙 复合膜 |
Fabrication and Photocatalytic Performance of Ag-TiO_2 Composite Film |
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| ZHONG Jun-bo,MA Di. Fabrication and Photocatalytic Performance of Ag-TiO_2 Composite Film[J]. Journal of Sichuan University of Science & Engineering(Natural Science Editton), 2010, 23(2): 194-197,201 |
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| Authors: | ZHONG Jun-bo MA Di |
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| Affiliation: | ZHONG Jun-bo,MA Di(School of Chemical , Pharmacentical Engineering,Sichuan University of Science & Engineering,Zigong 643000,China) |
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| Abstract: | Ag-TiO2 composite film with 1.0% Ag loading supported on glass was fabricated by using the Sol-Gel method and the photocatalytic performance towards degradation of methyl orange(MO) was investigated.The results indicate that the optimal calcination temperature is 450℃ and TiO2 is anatase.Photocatalytic activity of Ag-TiO2 composite film is 2.25 times of that of TiO2 film.The decolorization efficiency is the best when pH value is low.The kinetic results demonstrate that the decolorization reaction is a pseudo first-order reaction when the concentration of MO is below 10 mg/L and Langmuir-Hinshewood kinetic model(L-H) can well describe.The photocatalytic performance keeps stable after fifteen hours. |
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| Keywords: | TiO2 |
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