张翼,吴盛文,马德胜,韩大匡,朱友益

• 1:中国石油勘探开发研究院提高采收率国家重点实验室
• 2:大庆石油学院化学化工学院

摘要(Abstract)：

以钛酸丁酯为先驱体、无水乙醇为溶剂、二乙醇胺为螯合剂,采用溶胶-凝胶浸渍提升法制备钛基TiO2-SnO2复合电极。借助于含油废水化学需氧量(COD)的去除效果和紫外吸收光谱考察了电极的电催化氧化能力。并采用SEM、XRD和EDX等表征方法分析了Sn的掺杂对所制备电极表面形貌、涂层晶体结构和电极表层的元素组成的影响,通过电化学线性伏安扫描测定了其析氧电位,分析了电极结构与电催化特性之间的关系。结果表明,当热处理温度为500℃时,所制备电极的涂层中TiO2主要为锐钛矿型,掺杂适量Sn后,电极的表面变得更加平滑、致密,涂层表面晶粒明显细化。当Sn的摩尔掺杂比为n(Ti):n(Sn)=100:10时,复合氧化物涂层电极的电催化性能最好,电极的析氧电位为2.1V,此电极处理含油废水60min时,COD去除率达到了87.5%,较未添加Sn的电极相比对COD的去除率提高了26.7%,这说明掺杂适量的Sn提高了电极的催化性能。

关键词(KeyWords)： 溶胶-凝胶法;TiO2-SnO2;含油废水;电催化;化学需氧量(COD)

Abstract:

Keywords:

基金项目(Foundation): 中国石油天然气集团公司中青年创新基金资助项目(07E1010)

作者(Author): 张翼,吴盛文,马德胜,韩大匡,朱友益

DOI: 10.13289/j.issn.1009-6264.2010.11.027

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