Preparation of TiO_2/ITO film by liquid phase deposition and its photoelectrocatalytic activity for degradation of 4-aminoantipyrine  

TiO_2/ITO膜的液相沉积法制备及其用于4-氨基安替比林降解的光电催化活性(英文)

作　　者：李丹[1] 童海霞[1] 张玲[1] 

机构地区：[1]长沙理工大学化学与生物工程学院电力与交通材料保护湖南省重点实验室,长沙410004

出　　处：《Transactions of Nonferrous Metals Society of China》2013年第11期3306-3311,共6页中国有色金属学报（英文版）

基　　金：Projects(12JJ3013,11JJ5010,10JJ5002)supported by the Natural Science Foundation of Hunan Province,China;Project(2013CL04)supported by the Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation,Changsha University of Science and Technology,China;Project(2011RS4069)supported by the Planned Science and Technology Program of Hunan Province,China

摘　　要：A thin layer of TiO2 film was deposited on ITO surface via the liquid phase deposition （LPD） process. The photocurrent and electrochemical impedance spectroscopy （EIS） measurements indicated that the as-prepared LPD TiO2/ITO film had an excellent photoelectrochemical performance, which showed a sensitive and rapid response to the UV irradiation. The photogenerated electron-hole pairs could be effectively separated by applying an external bias to the TiO2 film electrode. The LPD TiO2/ITO film was employed to study the photoelectrocatalytic （PEC） degradation of 4-aminoantipyrine. Compared with other techniques, the PEC technique based on such a LPD film electrode had a synergetic effect for 4-aminoantipyrine degradation. When the applied bias potential was＋0.8 V and the supporting electrolyte concentration of Na2SO4 was 0.1 mol/L, the highest degradation efficiency within 120 min could reach 95%for 0.1 mmol/L 4-aminoantipyrine solution at pH 2.0.利用液相沉积(LPD)法在ITO表面制备TiO2薄膜。光电流和交流阻抗(EIS)测试表明,这种TiO2/ITO液相沉积膜具有良好的光电性能,对紫外光产生灵敏、快速的电流响应,在此膜电极上通过施加一定的阳极偏压可有效分离光生电子-空穴对。将TiO2/ITO膜用于4-氨基安替比林的光电催化降解研究,与其他方法相比,利用此液相沉积膜电极的光电催化技术对于4-氨基安替比林的降解具有明显的协同效果,适合于该污染物的降解处理。当外加阳极偏压为+0.8 V,支持电解质Na2SO4浓度为0.1 mol/L,溶液pH为2.0时,0.1 mmol/L 4-氨基安替比林120 min的光电催化降解效率最高可达95%。

关 键 词：liquid phase deposition TiO： film electrode PHOTOELECTROCATALYSIS 4-AMINOANTIPYRINE 

分 类 号：O643.32[理学—物理化学]