| Ru-TiO2光电极对亚甲基蓝的光电催化降解 |
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| 引用本文： | 王理明,姚秉华,裴亮,程刚.Ru-TiO2光电极对亚甲基蓝的光电催化降解[J].环境污染治理技术与设备,2010(4):839-842. |
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| 作者姓名： | 王理明 姚秉华 裴亮 程刚 |
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| 作者单位： | [1]西安理工大学水利水电学院,西安710048 [2]西安工程大学环境与化学工程学院,西安710048 |
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| 基金项目： | 基金项目：陕西省自然科学基金资助项目（SJ08816）;西安理工大学优秀博士学位论文研究基金（602-210804） |
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| 摘 要： | 采用阳极氧化法制备Ru—TiO2光电极，以该电极为工作电极，石墨作对电极，饱和甘汞电极为参比电极，对亚甲基蓝溶液的光电催化降解进行了研究。结果表明：煅烧温度600oC，掺杂1％Ru的Ru-TiO2光电极催化活性最好；以紫外灯（125W）为光源，当外加偏压0．2V，pH为5时，Ru-TiO2光电催化亚甲基蓝120min可使其完全脱色；亚甲基蓝的光电催化降解遵从Langmuir—Hinshelwood动力学模型，测得其反应速率常数k：0．781mmol／（L·min），吸附常数K=0．225L／mmol。
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| 关 键 词： | Ru—TiO2光电极 光电催化 亚甲基蓝 |
Photoelectrocatalytic degradation of methylene blue by Ru-TiO2 photoelectrode |
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| Wang Liming Yao Binghua Pei Liang Cheng Gang.Photoelectrocatalytic degradation of methylene blue by Ru-TiO2 photoelectrode[J].Techniques and Equipment for Environmental Pollution Control,2010(4):839-842. |
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| Authors: | Wang Liming Yao Binghua Pei Liang Cheng Gang |
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| Institution: | Wang Liming Yao Binghua Pei Liang Cheng Gang ( 1. Institute of Water Resources and Hydro-electric Engineering, Xi＇ an University of Technology, Xi＇ an 710048 ,China; 2. School of Environmental and Chemical Engineering, Xi＇ an Polytechnic University, Xi＇ an 710048 ,China) |
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| Abstract: | The Ru-TiO2 photoelectrode prepared by anodization method was used as the working electrode with graphite as the counter electrode, and saturated calomel electrode as the reference electrode to study the photoelectrocatalytic degradation of methylene blue solution. The results indicated that the optimum concentration of Ru was 1% and the optimum calcination temperature was 600 ℃. With bias voltage of 0. 2 V and pH of 5, methylene blue solution was decolored completely in 120 min by Ru-TiO2 photoelectrode under UV light （125 W）. The photoelectrocatalytic degradation of methylene blue solution was experimentally demonstrated to follow the Langmuir-Hinshelwood kinetic model, the reaction rate constant k = 0. 781 mmol/（L ·min） and the adsorption constant K = 0. 225 L/mmol were determined. |
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| Keywords: | Ru-TiO2 photoelectrode photoelectrocatalysis methylene blue |
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