ZnO/TiO_2复合涂层电极的制备及其光电性能  

Photoelectric Properties and Preparation of ZnO/TiO_2 Composite Coating Electrode

作　　者：文新宇[1] 黄紫洋[1] 

机构地区：[1]福建师范大学化学与材料学院,福州350007

出　　处：《无机化学学报》2011年第6期1128-1132,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.30970887)资助项目

摘　　要：以氧化铟锡导电玻璃为基材,采用电泳沉积法制备负载型ZnO/TiO2复合涂层,经450℃后续烧结处理后,采用XRD、SEM、EDX和UV-Vis DRS对ZnO/TiO2复合涂层进行表征;在pH=7.00的磷酸盐缓冲溶液中,分别测试ZnO/TiO2复合涂层电极在紫外灯和100 W白炽灯辐照下的电化学阻抗谱、Tafel极化曲线和循环伏安等电化学性质。结果表明：ZnO以200-300 nm晶粒分散于复合涂层中,质量百分比为0.74%;ZnO/TiO2复合涂层在可见光区有一定的吸收;在可见光辐照下ZnO/TiO2复合涂层电极具有较好的光电活性,并对水的分解具有较强的光电催化活性。ZnO/TiO2 composite coating was prepared on indium-tin-oxide（ITO） conductive glass surface by electrophoretic deposition.After 450℃ subsequent sintering treatment,ZnO/TiO2 composite coating was characterized by XRD,SEM,EDX and UV-Vis DRS.And then,under ultraviolet light and visible light illumination,the photoelectric properties of ZnO/TiO2 composite coating electrode such as electrochemical impedance spectroscopy（EIS）,Tafel polarization curve and cyclic voltammetry（CV） were measured on the pH=7.00 phosphate buffer system（PBS）.The results show that ZnO grain size is 200~300 nm dispersed in ZnO/TiO2 composite coating and the mass percentage of ZnO is 0.74%,visible light is absorbed to some extent,electrochemical tests indicate that composite coating electrode takes on excellent photoelectrocatalytic activity for decomposition of H2O under visible light illumination.

关 键 词：电泳沉积 ZnO/TiO2复合涂层电极 光电性能 ITO导电玻璃 

分 类 号：TQ134.11[化学工程—无机化工] O646.541[理学—物理化学]