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环境工程学报 2010

Ru-TiO2光电极对亚甲基蓝的光电催化降解

王理明,姚秉华,裴亮,程刚

Keywords: Ru-TiO2光电极,光电催化,亚甲基蓝

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Abstract:

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600℃,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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