中文摘要：

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10mg/L的RhB在1.5V偏压和NaCl（1.5mol/L）为电解质的条件下,光照60min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2mm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.

英文摘要：

A solid-state TiO2 planar device,ITO/TiO2/ITO,was prepared by immobilizing TiO2 film on indium-tin oxide （ITO） substrate with a certain electrode configuration through a dip-coating method. The surface morphology and film thickness of ITO/TiO2/ITO were characterized by scanning electron microscopy. The effects of configurations of the device and hole scavenger （ethanol） on the photoelectrocatalytic synergetic degradation of rhodamine B （RhB） were investigated over the planar device ITO/TiO2/ITO. The decoloration rate of RhB with the initial concentration of 10 mg/L reached 83% within 60 min. The ITO/TiO2/ITO device with larger photoanode area presented better photoelectrocatalytic properties,and the device with the etching width of 2 mm exhibited the highest photoelectrocatalytic activity. The hydroxyl radicals produced by the water adsorbed on TiO2 surface being oxidized by holes played an important role in liquid-phase photoelectrocatalytic degradation of RhB.