Constructing a novel AuAg/BiOBr/BaTiO3 composite via selective decoration route with enhanced visible-light photoatalytic performance

doi:10.1016/j.optmat.2021.111842

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	Constructing a novel AuAg/BiOBr/BaTiO3 composite via selective decoration route with enhanced visible-light photoatalytic performance
	Xian, Tao 2; Li, Hongqin 2; Gao, Yushu 2; Sun, Xiaofeng 2; Di, Lijing 2; Yang, Hua 1
刊名	OPTICAL MATERIALS
	2022
卷号	123
关键词	BiOBr BaTiO3 AuAg alloy Photocatalysis Modification
ISSN号	0925-3467
DOI	10.1016/j.optmat.2021.111842
英文摘要	In this work, the BaTiO3 nanoparticles (hole acceptor) were firstly decorated on the surface of BiOBr nanoplates by hydrothermal method, and then AuAg alloy nanoparticles (electron acceptor) are selectively deposited on the uncovered surface of BiOBr nanoplates to form AuAg/BiOBr/BaTiO3 composite using visible-light photodeposition method. It is found that the BaTiO3 (similar to 55 nm) and AuAg (7-16 nm) nanoparticles are uniformly dispersed on the BiOBr surface, which are disconnected without direct contact between them. The visible-light photocatalytic degradation and reduction activity of products were evaluated using methyl orange (MO), acid orange 7 (AO7), rhodamine B (RhB) and Cr(VI) as the target reactant. After the combination of BiOBr with BaTiO3, the BiOBr/BaTiO3 composites exhibit enhanced photocatalytic activity. When the content of BaTiO3 reaches about 10%, the BiOBr/10%BaTiO3 composite exhibits best photocatalytic efficiency. Notably, the selective deposition of Au, Ag and AuAg alloy nanoparticles leads to the further enhancement of photocatalytic activity for BiOBr/10%BaTiO3 composite, and the optimal photocatalytic activity can be achieved over AuAg/BiOBr/10%BaTiO3 sample. The AuAg/BiOBr/10%BaTiO3 composite is demonstrated to be an stable photocatalyst, which also exhibits efficient synergistic photocatalytic activity for the purification of the RhB/Cr(VI) and AO7/Cr(VI) mixture. The photogenerated charges performance of products was measured by electrochemical work station. The main active species participated in the photocatalytic reaction of AuAg/BiOBr/10% BaTiO3 was detected. Based on above results, the synergistic modification mechanism of BaTiO3 and AuAg alloy nanoparticles on the photocatalytic activity of BiOBr was proposed.
WOS研究方向	Materials Science ; Optics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000750721500003
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/154882]
专题	理学院
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China 2.Qinghai Normal Univ, Coll Phys & Elect Informat Engn, Xining 810008, Peoples R China;
推荐引用方式 GB/T 7714	Xian, Tao,Li, Hongqin,Gao, Yushu,et al. Constructing a novel AuAg/BiOBr/BaTiO3 composite via selective decoration route with enhanced visible-light photoatalytic performance[J]. OPTICAL MATERIALS,2022,123.
APA	Xian, Tao,Li, Hongqin,Gao, Yushu,Sun, Xiaofeng,Di, Lijing,&Yang, Hua.(2022).Constructing a novel AuAg/BiOBr/BaTiO3 composite via selective decoration route with enhanced visible-light photoatalytic performance.OPTICAL MATERIALS,123.
MLA	Xian, Tao,et al."Constructing a novel AuAg/BiOBr/BaTiO3 composite via selective decoration route with enhanced visible-light photoatalytic performance".OPTICAL MATERIALS 123(2022).