Preparation of Z-scheme Au-Ag2S/Bi2O3 composite by selective deposition method and its improved photocatalytic degradation and reduction activity

doi:10.1016/j.apt.2021.08.018

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	Preparation of Z-scheme Au-Ag2S/Bi2O3 composite by selective deposition method and its improved photocatalytic degradation and reduction activity
	Di, Lijing 1; Sun, Xiaofeng 1; Xian, Tao 1; Li, Hongqin 1; Gao, Yushu 1; Yang, Hua 2
刊名	Advanced Powder Technology
	2021-10-01
卷号	32 期号:10 页码:3672-3688
关键词	Chromium compounds Efficiency Gold deposits Gold nanoparticles Heterojunctions Infrared devices Photocatalytic activity Rhodium compounds Silver compounds Ag$++$ Au nanoparticle Bi$-2$/O$-3$ Degradation activity Nano-Plate Photo catalytic degradation Photocatalytic activities Photocatalytic reduction Reduction activity Z-scheme heterojunction
ISSN号	09218831
DOI	10.1016/j.apt.2021.08.018
英文摘要	In this work, Z-scheme Ag2S/Bi2O3 composites were fabricated through the precipitation of Ag2S nanoplates on the surface of Bi2O3 microrods. Consequently, Au nanoparticles were selectively deposited on the Ag2S nanoplates surface to obtain. Au-Ag2S/Bi2O3 composites using near-infrared light photodeposition method. The characterization results indicate that the Ag2S nanoplates were uniformly anchored on Bi2O3 surface, and Au nanoparticles were highly dispersed on the surface of Ag2S nanoplate instead of Bi2O3. Acid orange 7 (AO7), Rhodamine B (RhB) and Cr(VI) were chosen as model reactant for the evaluation of photocatalytic degradation and reduction activity of the products under simulated sunlight irradiation. After the decoration of Ag2S nanoplates, the photocatalytic activity of Ag2S/Bi2O3 is much higher than that of bare Bi2O3, and the optimal catalytic efficiency is achieved by 12 %Ag2S/Bi2O3 sample. More importantly, the photocatalytic activity of 12 %Ag2S/Bi2O3 sample can be further enhanced by the selective decoration Au nanoparticles on the Ag2S nanoplates. Among the ternary composites, 2Au-12 %Ag2S/Bi2O3 sample with the Au content of 2% exhibits highest catalytic efficiency for 60 min (AO7: 96%; RhB: 56%; Cr(VI): 65%). The possible mechanism for the improvement of the photocatalytic activity of Bi2O3 by Ag2S and Au decoration was proposed. © 2021 The Society of Powder Technology Japan
WOS研究方向	Engineering
语种	英语
出版者	Elsevier B.V.
WOS记录号	WOS:000711714100001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150881]
专题	理学院
作者单位	1.College of Physics and Electronic Information Engineering, Qinghai Normal University, Xining; 810008, China; 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Di, Lijing,Sun, Xiaofeng,Xian, Tao,et al. Preparation of Z-scheme Au-Ag2S/Bi2O3 composite by selective deposition method and its improved photocatalytic degradation and reduction activity[J]. Advanced Powder Technology,2021,32(10):3672-3688.
APA	Di, Lijing,Sun, Xiaofeng,Xian, Tao,Li, Hongqin,Gao, Yushu,&Yang, Hua.(2021).Preparation of Z-scheme Au-Ag2S/Bi2O3 composite by selective deposition method and its improved photocatalytic degradation and reduction activity.Advanced Powder Technology,32(10),3672-3688.
MLA	Di, Lijing,et al."Preparation of Z-scheme Au-Ag2S/Bi2O3 composite by selective deposition method and its improved photocatalytic degradation and reduction activity".Advanced Powder Technology 32.10(2021):3672-3688.