采用浸渍-提拉法将TiO2薄膜负载在具有一定电极构型的氧化铟锡(ITO)基底上,制备了全固态TiO2平面型器件(ITO/TiO2/ITO).采用扫描电镜对器件的表面形貌和膜厚进行了表征.以紫外光下器件光电协同催化降解罗丹明B(RhB)为模型反应,考察了器件的构型和空穴捕获剂(乙醇)对其光电催化性能的影响.结果表明,初始浓度为10 mg/L的RhB在1.5 V偏压和NaCl(1.5 mol/L)为电解质的条件下,光照60 min脱色率达到83%;阳极面积较大的器件光电催化性能较好,刻蚀宽度为2 mm时光电催化活性最高;空穴与TiO2表面吸附的H2O氧化生成的羟基自由基对液相光电催化降解RhB起着重要作用.
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