CeO_2-TiO_2复合纳米晶多孔膜的光电化学行为  

Photoelectrochemical Behavior of CeO_2-TiO_2 Composite Nanocrystalline Porous Films

作　　者：李卫华[1] 郝彦忠[1] 王艳芹[1] 江鹏[1] 杨迈之[1] 程虎民[1] 蔡生民[1] 

机构地区：[1]北京大学化学与分子工程学院,北京100871

出　　处：《应用化学》1998年第4期17-20,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金

摘　　要：用溶胶凝胶法制备了CeO2－TiO2复合纳米晶多孔膜电极，并用XRD及原子力显微镜（AFM）进行表征．通过光电化学研究，发现了CeO2-TiO2复合纳米晶电极光响应的p型和n型转换现象．结果表明，随着CeO2含量的不同及外电场的变化，CeO2－TiO2复合纳米晶电极可以呈现不同的光响应．The CeO2-TiO2 composite nanocrystalline porous film electrodes prepared by solgel method have been investigated by XRD, AFM and photoelectrochemcal methods. Thetranspositions of p-- and n--type photoresponses were observed on the composite film electrodes for the first time. It could be due to the competition between CeO2 and TiO2 photoresponses. This result Aught have a potential application in smart window and solar energyconversion.

关 键 词：复合物 纳米 多孔膜 光电化学 二氧化钛 氧化铈 

分 类 号：O614.411[理学—无机化学] O614.332[理学—化学]