Improved photocatalytic degradation and reduction performance of Bi2O3 by the decoration of AuPt alloy nanoparticles

doi:10.1016/j.optmat.2020.110614

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	Improved photocatalytic degradation and reduction performance of Bi2O3 by the decoration of AuPt alloy nanoparticles
	Xian, Tao 2; Sun, Xiaofeng 2; Di, Lijing 2; Li, Hongqin 2; Yang, Hua 1
刊名	Optical Materials
	2021
卷号	111
关键词	Binary alloys Biodegradation Bismuth alloys Bismuth compounds Chemical detection Chromium compounds Complexation Nanoparticles Photocatalytic activity Plasmons Platinum alloys Reduction Schottky barrier diodes Surface plasmon resonance Au-pt alloy nanoparticles Diffuse reflectance spectrum Homogeneous distribution Photo catalytic degradation Photogenerated charge Photoinduced electrons Schottky barrier heights XPS characterization
ISSN号	09253467
DOI	10.1016/j.optmat.2020.110614
英文摘要	In this work, AuPt alloy nanoparticles were attached onto the surface of Bi2O3 particles to obtain AuPt/Bi2O3 composite. The existence of AuPt bimetallic alloy and their homogeneous distribution on Bi2O3 surface were fully confirmed by XPS characterization and HRTEM observation. The surface plasmon resonance (SPR) effect of noble metals was detected using Ultraviolet–visible diffuse reflectance spectra. The photocatalytic degradation and reduction ability of products were estimated using Acid orange 7 (AO7), phenol and Cr(VI) as the target reactant under simulated sunlight irradiation, indicating that AuPt/Bi2O3 composite possesses remarkable higher photocatalytic activity compared with bare, Au and Pt decorated Bi2O3. In addition, AuPt/Bi2O3 composite is proved to be a stable photocatalysts. The effective separation and migration of photoinduced electrons and holes in AuPt/Bi2O3 sample is demonstrated employing electrochemical and photoluminescence detection. The AuPt/Bi2O3 composite not only has suitable schottky barrier height for trapping the photogenerated charges but also exhibits surface plasmon resonance (SPR) effect, which leads to enhanced photocatalytic activity. © 2020
WOS研究方向	Materials Science ; Optics
语种	英语
出版者	Elsevier B.V.
WOS记录号	WOS:000612800800008
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/147229]
专题	理学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China 2.College of Physics and Electronic Information Engineering, Qinghai Normal University, Xining; 810008, China;
推荐引用方式 GB/T 7714	Xian, Tao,Sun, Xiaofeng,Di, Lijing,et al. Improved photocatalytic degradation and reduction performance of Bi2O3 by the decoration of AuPt alloy nanoparticles[J]. Optical Materials,2021,111.
APA	Xian, Tao,Sun, Xiaofeng,Di, Lijing,Li, Hongqin,&Yang, Hua.(2021).Improved photocatalytic degradation and reduction performance of Bi2O3 by the decoration of AuPt alloy nanoparticles.Optical Materials,111.
MLA	Xian, Tao,et al."Improved photocatalytic degradation and reduction performance of Bi2O3 by the decoration of AuPt alloy nanoparticles".Optical Materials 111(2021).