Photocatalytic Characteristics of ZnO/Ag2CrO4 Composite and Its Photocatalytic Mechanism with Z-scheme of Electron Transport

doi:10.11896/cldb.19050190

	Photocatalytic Characteristics of ZnO/Ag2CrO4 Composite and Its Photocatalytic Mechanism with Z-scheme of Electron Transport
	Yu, Fucheng 1; Nan, Dongmei 1; Song, Tianyun 1; Wang, Bolong 1; Xu, Boyu 1; He, Ling 1; Wang, Shu 1; Duan, Hongyan 2
刊名	Cailiao Daobao/Materials Reports
	2020-04-25
卷号	34 期号:4 页码:08003-08009
关键词	Azo dyes Chromium compounds Deposition Efficiency Electron transport properties Excitons II-VI semiconductors Image processing Lanthanum compounds Nanorods Nanosheets Oxide minerals Photocatalytic activity Red Shift Zinc oxide Degradation of methyl oranges Electron hole pairs Hydrothermal methods Intrinsic absorptions Photocatalytic characteristics Photocatalytic efficiency Photocatalytic process Photocatalytic property
ISSN号	1005023X
DOI	10.11896/cldb.19050190
英文摘要	The La-doped ZnO nanorods composited with Ag2CrO4 nanosheets (ZnO/Ag2CrO4) were prepared by a hydrothermal method followed by a photo-deposition process. And the photocatalytic properties of the ZnO/Ag2CrO4 composite were examined by a degradation of methyl orange (MO) solution at room temperature. In the investigation of absorption properties of the ZnO/Ag2CrO4 composite, an obvious red-shift of the intrinsic absorption edge of ZnO was observed, which was induced by the composited Ag2CrO4 nano-sheets. Therefore, compared with pure ZnO, the utilization rate of solar light was improved effectively by the composite, which was beneficial to the elevation of the photocatalytic efficiency. Furthermore, the photocatalytic efficiency of the composite increased with the increasing of the content of the Ag2CrO4 nano-sheets in the composite, and the optimum photocatalytic efficiency appeared in the sample prepared with the Ag+ concentration being 6% of Zn source concentration during photo-deposition process. When the Ag+ concentration was further increased, the excess Ag2CrO4 was produced, which led to degradation of photocatalytic efficiency. Based on the measurements of UV-Vis and PL spectra, a Z-type scheme electron transport mechanism was deduced in the ZnO/Ag2CrO4 composite during photocatalytic process, by which the recombination of electron-hole pairs was inhibited, thus the lifetime of excitons was prolonged. Therefore, the photocatalytic efficiency of the composite was dramatically improved. © 2020, Materials Review Magazine. All right reserved.
语种	中文
出版者	Cailiao Daobaoshe/ Materials Review
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115076]
专题	材料科学与工程学院机电工程学院
作者单位	1.School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Yu, Fucheng,Nan, Dongmei,Song, Tianyun,et al. Photocatalytic Characteristics of ZnO/Ag2CrO4 Composite and Its Photocatalytic Mechanism with Z-scheme of Electron Transport[J]. Cailiao Daobao/Materials Reports,2020,34(4):08003-08009.
APA	Yu, Fucheng.,Nan, Dongmei.,Song, Tianyun.,Wang, Bolong.,Xu, Boyu.,...&Duan, Hongyan.(2020).Photocatalytic Characteristics of ZnO/Ag2CrO4 Composite and Its Photocatalytic Mechanism with Z-scheme of Electron Transport.Cailiao Daobao/Materials Reports,34(4),08003-08009.
MLA	Yu, Fucheng,et al."Photocatalytic Characteristics of ZnO/Ag2CrO4 Composite and Its Photocatalytic Mechanism with Z-scheme of Electron Transport".Cailiao Daobao/Materials Reports 34.4(2020):08003-08009.