采用高温热氧化方法制备了含Mn中间层的钛基二氧化锡电催化电极Ti/Mn/SnO2.采用SEM、EDX以及XPS等检测方法对电极表面涂层的形貌、元素组成及元素化学态进行了分析,研究了所制备Ti/Mn/SnO2电极电催化氧化降解苯酚的性能.结果表明,Mn中间层的引入降低了电极对苯酚的电催化降解活性,使电极的使用稳定性大为提高.含Mn中间层的存在,可防止电化学反应过程中析出的氧向基体的扩散,离子对Mn2+/Mn4+与Sn2+/Sn4+的存在改变了SnO2电极表面催化剂的组成和结构,导致电极性能变化.
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