Facile synthesis of Cu/tetrapod-like ZnO whisker compounds with enhanced photocatalytic properties  

作　　者：Hong Liu Huarong Liu Ximei Fan 

机构地区：[1]Department of Materials Engineering, Sichuan College of Architectural Technology [2]Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering,Southwest Jiaotong University

出　　处：《Journal of Semiconductors》2017年第9期31-36,共6页半导体学报（英文版）

摘　　要：Cu/tetrapod-like ZnO whisker （T-ZnOw） compounds were successfully synthesized using N2H4.H2O as a reducing agent by a simple reduction method without any insert gas at room temperature. The crystal phase composition and morphology of the as-prepared samples were investigated by XRD, SEM and FESEM tests. The photocatalytic property of the as-prepared samples was detected by the degradation of methyl orange （MO） aqueous solution under UV irradiation. It can be found that Cu nanoparticles （CuNPs） dispersed on the surface of T-ZnOw increased with the increasing of Cu/Zn molar ratios （Cu/Zn MRs）, and an octahedral structure of CuNPs was ob- tained when the sample was prepared with less than and equal to 7.30% Cu/Zn MR, but tended to a spherical or nanorod structure of CuNPs densely arranged on the surface of T-ZnOw, which is prepared by Cu/Zn MRs up to 22.00%. All the compounds exhibited excellent photocatalytic activity in decomposing of MO than T-ZnOw, the photocatalytic property of the samples increased with the increasing of Cu/Zn MRs up to 7.30%, while it decreases when further increasing the Cu/Zn MRs. The Schottky barrier of the Cu/T-ZnOw compound can effectively capture photoinduced electrons from the interface and enhanced the photocatalytic property of T-ZnOw.Cu/tetrapod-like ZnO whisker （T-ZnOw） compounds were successfully synthesized using N2H4.H2O as a reducing agent by a simple reduction method without any insert gas at room temperature. The crystal phase composition and morphology of the as-prepared samples were investigated by XRD, SEM and FESEM tests. The photocatalytic property of the as-prepared samples was detected by the degradation of methyl orange （MO） aqueous solution under UV irradiation. It can be found that Cu nanoparticles （CuNPs） dispersed on the surface of T-ZnOw increased with the increasing of Cu/Zn molar ratios （Cu/Zn MRs）, and an octahedral structure of CuNPs was ob- tained when the sample was prepared with less than and equal to 7.30% Cu/Zn MR, but tended to a spherical or nanorod structure of CuNPs densely arranged on the surface of T-ZnOw, which is prepared by Cu/Zn MRs up to 22.00%. All the compounds exhibited excellent photocatalytic activity in decomposing of MO than T-ZnOw, the photocatalytic property of the samples increased with the increasing of Cu/Zn MRs up to 7.30%, while it decreases when further increasing the Cu/Zn MRs. The Schottky barrier of the Cu/T-ZnOw compound can effectively capture photoinduced electrons from the interface and enhanced the photocatalytic property of T-ZnOw.

关 键 词：HYDRAZINE Cu/Zn MRs Cu/T-ZnOw PHOTODEGRADATION 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]