掺杂Fe^(3+)的TiO_2薄膜电极的电化学研究  

Electrochemistry Studies on Fe^(3+)Doped TiO_2 Films Electrode

作　　者：霍莉[1] 丁克强[1] 王庆飞[1] 童汝亭[1] 

机构地区：[1]河北师范大学化学学院,石家庄050016

出　　处：《微纳电子技术》2005年第2期69-72,77,共5页Micronanoelectronic Technology

基　　金：河北省自然基金项目(202351)

摘　　要：适量Fe^(3+)掺杂可以提高TiO2薄膜电极的光催化氧化活性。采用交流阻抗谱、平带电势等方法研究了掺杂Fe^(3+)的纳米TiO_2薄膜电极的表面结构特征及其催化性能,为其光电转换机理提供了电化学依据。Fe3+ doping can improve the photocatalytic activity of TiO2 nanoparticles films electrode. The surface states of Fe3+ doped TiO2 film electrodes were investigated by electrochemical method,and the relative parameters were acquired. The density of holes on electrode surface increased so that the photocatalytic activity improved. The mechanism of Fe3+ doped TiO2 on photoelectrooxidating of methanol can be explained.

关 键 词：Fe^3+惨杂 TiO2薄膜电极 光催化氧化 交流阻抗 平带电势 空穴密度 

分 类 号：TN304.21[电子电信—物理电子学] O484[理学—固体物理]