Enhanced photocatalytic performance of Au nanoparticlesmodified rose flower-like Bi2WO6 hierarchical architectures

doi:10.2109/jcersj2.17148

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	Enhanced photocatalytic performance of Au nanoparticlesmodified rose flower-like Bi2WO6 hierarchical architectures
	Zheng, Chengxiang 1,2; Yang, Hua 1,2; Cui, Ziming 2
刊名	Journal of the Ceramic Society of Japan
	2017-12-01
卷号	125 期号:12 页码:887-893
关键词	Architecture Bismuth compounds Boron compounds Electrochemical impedance spectroscopy Electrons Gold Gold nanoparticles Heterojunctions High resolution transmission electron microscopy Nanoparticles Photocatalytic activity Rhodium compounds Scanning electron microscopy Spectroscopy Synthesis (chemical) X ray photoelectron spectroscopy X ray powder diffraction Au nanoparticle Diffuse reflectance spectroscopy Electron transfer Hierarchical architectures Photocatalytic performance Photocatalytic reactions Photocatalytic reduction Photogenerated electrons
ISSN号	18820743
DOI	10.2109/jcersj2.17148
英文摘要	Rose flower-like Bi2WO6 hierarchical architectures with average diameter of 7μm were synthesized via a hydrothermal route. The as-synthesized Bi2WO6 hierarchical architectures were decorated with Au nanoparticles (20-110 nm in size) by a photocatalytic reduction method. The prepared samples were systematically investigated by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy, electrochemical impedance spectroscopy and photocurrent response. The photocatalytic performance of the samples was evaluated by the degradation of RhB in aqueous solution under simulated sunlight irradiation. It is observed that Au-Bi2WO6 composite exhibits a photocatalytic activity much higher (about 2.7 times higher) than that of bare Bi2WO6. The enhanced photocatalytic activity of Au-Bi2WO6 can be attributed to the enhanced separation of photogenerated electron-hole pairs due to the electron migration from Bi2WO6 hierarchical architectures to Au nanoparticles. As a result, more electrons and holes are able to participate in the photocatalytic reactions. The underlying photocatalytic mechanism was discussed. © 2017 The Ceramic Society of Japan.
WOS研究方向	Materials Science
语种	英语
出版者	Ceramic Society of Japan
WOS记录号	WOS:000423123300007
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114307]
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.School of Science, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zheng, Chengxiang,Yang, Hua,Cui, Ziming. Enhanced photocatalytic performance of Au nanoparticlesmodified rose flower-like Bi2WO6 hierarchical architectures[J]. Journal of the Ceramic Society of Japan,2017,125(12):887-893.
APA	Zheng, Chengxiang,Yang, Hua,&Cui, Ziming.(2017).Enhanced photocatalytic performance of Au nanoparticlesmodified rose flower-like Bi2WO6 hierarchical architectures.Journal of the Ceramic Society of Japan,125(12),887-893.
MLA	Zheng, Chengxiang,et al."Enhanced photocatalytic performance of Au nanoparticlesmodified rose flower-like Bi2WO6 hierarchical architectures".Journal of the Ceramic Society of Japan 125.12(2017):887-893.