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环境化学  2015 

β-PbO2/TiO2电极对茜素红废水的降解效果和机理研究

Keywords: β-PbO2/TiO2电极,茜素红,·OH自由基

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Abstract:

研究了掺杂不同比例的纳米TiO3对β-PbO3/TiO3电极催化性能的影响,结果表明,TiO3能明显提高β-PbO3电极的电催化性能,当TiO3掺杂比例为2%时电催化性能提高最显著.对茜素红废水进行研究,探讨了电解时间、支持电解质Na2SO4浓度、茜素红初始浓度和pH值等因素对CODCR去除效率和能量利用效率的影响.GC-MS检测结果表明,茜素红分子的蒽环在电解过程中开环并生成了带苯环或链状的小分子.用紫外-可见吸收光谱分析和GC-MS检测的结果,探讨了茜素红可能的降解机理.

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