| 石墨负载TiO2薄膜电极光电催化降解甲基橙研究 |
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| 引用本文： | 孔祥晋,潘湛昌,张环华,肖楚民. 石墨负载TiO2薄膜电极光电催化降解甲基橙研究[J]. 工业水处理, 2005, 25(12): 24-26 |
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| 作者姓名： | 孔祥晋 潘湛昌 张环华 肖楚民 |
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| 作者单位： | 广东工业大学轻工化工学院,广东,广州,510090 |
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| 基金项目： | 广东省科技计划项目（2004810301010） |
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| 摘 要： | 采用溶胶-凝胶法制备石墨负载TiO2薄膜电极，以125W高压汞灯为光源，以负载TiO2薄膜的石墨片为工作电极，铂电极为对电极，饱和甘汞电极为参比电极，建立三电极的光电催化体系，以甲基橙为降解对象．考察了初始浓度、涂敷层数、外加电压、通入空气对甲基橙降解速率的影响。研究表明，石墨是光催化剂良好的载体．外加电压可以促进光催化降解的效率，外加电压2V、涂敷3层、通入空气时对目标物质的降解效果最好。
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| 关 键 词： | 光催化 光电催化 二氧化钛 薄膜电极 |
| 文章编号： | 1005-829X（2005）12-0024-03 |
| 收稿时间： | 2005-07-22 |
| 修稿时间： | 2005-07-22 |
Studies on the photoelectrocatalytic degradation of methyl orange by using TiO2 coated on graphite films electrode |
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| Kong Xiangjin,Pan Zhanchang,Zhang Huanhua,Xiao Chumin. Studies on the photoelectrocatalytic degradation of methyl orange by using TiO2 coated on graphite films electrode[J]. Industrial Water Treatment, 2005, 25(12): 24-26 |
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| Authors: | Kong Xiangjin Pan Zhanchang Zhang Huanhua Xiao Chumin |
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| Affiliation: | Faculty of Light Industry and Chemical Engineering, Guangdong University of Technology,Guangzhou 510090, China |
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| Abstract: | TiO2 deposited on graphite thin films is prepared by sol-gel method,Using the TiO2 electrode as working electrode,the photoelectrocatalytic(PEC)system is set up.Applying this system,the degradation of methyl orange in aqueous solution is investigated in terms of decolorization.The key factors affecting the PEC oxidation efficiency are studied,including the initial concentration of methyl orange solution,electrode potential,the number of coating layers and airflow.It is found that an optimal bias voltage of 2.0 V,3 coating layers and airflow are favourable for the removal of methyl orange in aqueous solution.Our investigation shows that graphite is a good carrier,and PEC oxidation is a convenient way to mineralize the organic pollutants with high efficiency. |
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| Keywords: | photocatalysis photoelectrocatalysis titanium dioxide film electrode |
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