CuO包覆ZnO颗粒的光催化性能  

Photocatalysis performance of ZnO particles by coated CuO

作　　者：于富成[1] 宋天云 许博宇 王博龙 南冬梅 何玲[1] YU Fu-cheng;SONG Tian-yun;XU Bo-yu;WANG Bo-long;NAN Dong-mei;HE Ling(College of Materials Science and Engineering,Lanzhou Univ.of Tech.,Lanzhou 730050,China)

机构地区：[1]兰州理工大学材料科学与工程学院

出　　处：《兰州理工大学学报》2019年第4期22-26,共5页Journal of Lanzhou University of Technology

基　　金：甘肃省自然科学基金(150RJZA107)

摘　　要：在水热法制备的ZnO颗粒上复合CuO进行对甲基橙的光催化实验,研究了ZnO表面氧空位的存在对CuO包覆的ZnO颗粒光催化性能的影响.结果表明:经过真空热处理后ZnO表面的氧空位显著增加,氧空位的存在为CuO在ZnO表面的附着提供了更多的活性位点,对CuO的形核与生长起着积极的作用.数量更多的CuO更加稳定地附着在ZnO表面,形成了稳定的复合结构,提高了电子空穴对的分离效率,减少了载流子的复合.光催化实验结果表明该复合结构较纯ZnO颗粒展现了更为优越的光催化性能.The CuO coated ZnO particles were prepared via hydrothermal method,the photocatalysis test of the methyl orange was conducted;and the effect of the existence of surface oxygen vacancy of ZnO on its photocatalytic performance was studied.The result showed that the remarkable increase of oxygen vacancy on ZnO particle surface after its vacuum heat treatment,and the existence of the oxygen vacancy would provide more active sites for the binding of CuO on ZnO particle surface and it would play a key role in the nucleation and growth of CuO crystal.A large amount of CuO would be then coated on ZnO particle surface and form a stable composite structure,improving the separation efficiency of electron-hole pairs and reducing the recombination of the carriers.The photocatalysis measurements showed that the catalytic performance of the composite structure would be more effective than pure ZnO particles.

关 键 词：ZNO CUO 表面氧空位 光催化 

分 类 号：TB34[一般工业技术—材料科学与工程]