| 溶胶-凝胶掺杂铁对微弧氧化TiO_2膜光催化性能影响 |
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| 引用本文： | 苏会东,周丽娜.溶胶-凝胶掺杂铁对微弧氧化TiO_2膜光催化性能影响[J].环境科学与技术,2009,32(2). |
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| 作者姓名： | 苏会东 周丽娜 |
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| 作者单位： | 沈阳理工大学环境与化学工程学院,辽宁沈阳,110168 |
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| 基金项目： | 辽宁自然科学基金，辽宁省教育厅资助项目 |
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| 摘 要： | 以磷酸钠为电解液,采用微弧氧化技术在钛片上直接制备TiO2膜,利用溶胶-凝胶法和硝酸铁掺杂方法对该膜表面进行修饰处理,以罗丹明B溶液模拟废水来评价TiO2膜光催化降解水中有机污染物的能力。利用EDX对微弧氧化膜表面成分进行分析。实验结果表明:微弧氧化TiO2膜具有一定的光催化活性。溶胶-凝胶法负载TiO2且硝酸铁掺杂处理后可以使铁离子进入微弧氧化TiO2负载膜,改善膜的光催化性能。溶胶-凝胶法负载TiO2膜对废水的光催化降解效率由13.8%提高到42.5%;铁离子掺杂1%可以使负载TiO2膜对废水的光催化效率由42.5%提高到68.9%。
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| 关 键 词： | 微弧氧化 二氧化钛 溶胶-凝胶负载 铁掺杂 光催化 |
Effect of Photocatalytic Activity of Sol-gel Doped Fe~(3+) on TiO_2 Films Using Micro-arc Oxidation |
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| SU Hui-dong,ZHOU Lina.Effect of Photocatalytic Activity of Sol-gel Doped Fe~(3+) on TiO_2 Films Using Micro-arc Oxidation[J].Environmental Science and Technology,2009,32(2). |
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| Authors: | SU Hui-dong ZHOU Lina |
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| Institution: | School of Environmental and Chemical Engineering;Shenyang University of Technology;Shenyang 110168;China |
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| Abstract: | TiO2 films prepared on titanium surface by micro-arc oxidation (MAO)in Na3PO4 solution were treated by sol-gel and Fe3+ doped to improve the activity. The structure and photocatalytic ability of TiO2 film before and after surface treatment were characterized and evaluated by EDX and photocatalytic decoloration of Rhodamine B aqueous solution respectively. Results showed that the photocatalytic activity of TiO2 coatings was enhanced after sol-gel and Fe3+ doped,with photocatalytic decoloration rate increasin... |
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| Keywords: | micro-arc oxidation TiO2 sol-gel load Fe3+ doping photocatalysis |
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