Visible light photocatalytic degradation of dyes by β-Bi2O3/graphene nanocomposites

doi:10.1016/j.jallcom.2015.05.096

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	Visible light photocatalytic degradation of dyes by β-Bi2O3/graphene nanocomposites
	Chen, Xuefu1,2 ; Dai, Jianfeng2 ; Shi, Gaofeng1 ; Li, Lan1 ; Wang, Guoying1 ; Yang, Hua2
	2015-08-04
发表期刊	Journal of Alloys and Compounds
ISSN	09258388
卷号	649 页码:872-877
摘要	Abstract β-Bi2O3 nanoparticles with an average grain size of 100 nm were synthesized by a polyacrylamide sol-gel method. Their bandgap energy is obtained by ultraviolet-visible diffuse reflectance spectroscopy is 2.37 eV. β-Bi2O3/GR composites were fabricated by mixing β-Bi2O3 nanoparticles and graphene into absolute ethanol solution followed by thermal drying. A transmission electron microscopy observation shows that β-Bi2O3 nanoparticles are well assembled onto GR sheets. The photocatalytic activity of prepared samples was evaluated by degrading methylene blue under the irradiation of visible light. Compared to bare β-Bi2O3 nanoparticles, β-Bi2O3/GR composites exhibit significantly enhanced photocatalytic activity. Detected by the photoluminescence technique that of using terephthalic acid as a probe molecule, hydroxyl (•OH) radicals are found to be produced on the irradiated β-Bi2O3/GR composites. Based on the experimental results, •OH radicals are suggested to be the major active species which is responsible for the degradation reaction. © 2015 Published by Elsevier B.V.
关键词	Aromatic compounds Bismuth compounds Complexation Dyes Free radicals High resolution transmission electron microscopy Light Nanoparticles Photocatalysis Sol-gel process Sol-gels Synthesis (chemical) Absolute ethanol Average grain size Degradation reaction Diffuse reflectance spectroscopy Hydroxyl radicals Photo catalytic degradation Terephthalic acids Transmission electron microscopy observation
DOI	10.1016/j.jallcom.2015.05.096
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000361159000120
出版者	Elsevier Ltd
EI入藏号	20153201120268
EI主题词	Photocatalytic activity
EI分类号	741.1 Light/Optics - 741.3 Optical Devices and Systems - 761 Nanotechnology - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds - 812.3 Glass - 933 Solid State Physics
来源库	Compendex
分类代码	741.1 Light/Optics - 741.3 Optical Devices and Systems - 761 Nanotechnology - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds - 812.3 Glass - 933 Solid State Physics
引用统计	被引频次：32[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/112416
专题	石油化工学院理学院
通讯作者	Dai, Jianfeng
作者单位	1.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
第一作者单位	石油化工学院; 省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	石油化工学院
推荐引用方式 GB/T 7714	Chen, Xuefu,Dai, Jianfeng,Shi, Gaofeng,et al. Visible light photocatalytic degradation of dyes by β-Bi2O3/graphene nanocomposites[J]. Journal of Alloys and Compounds,2015,649:872-877.
APA	Chen, Xuefu,Dai, Jianfeng,Shi, Gaofeng,Li, Lan,Wang, Guoying,&Yang, Hua.(2015).Visible light photocatalytic degradation of dyes by β-Bi2O3/graphene nanocomposites.Journal of Alloys and Compounds,649,872-877.
MLA	Chen, Xuefu,et al."Visible light photocatalytic degradation of dyes by β-Bi2O3/graphene nanocomposites".Journal of Alloys and Compounds 649(2015):872-877.