Bi quantum dots on rutile TiO2 as hole trapping centers for efficient photocatalytic bromate reduction under visible light illumination

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	Bi quantum dots on rutile TiO2 as hole trapping centers for efficient photocatalytic bromate reduction under visible light illumination
	Xiao, Jun; Yang, Weiyi; Li, Qi; Li, Q (reprint author), Chinese Acad Sci, Inst Met Res, Environm Funct Mat Div, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
刊名	ELSEVIER SCIENCE BV
	2017-12-05
卷号	218 页码:111-118
关键词	Bi Quantum Dots Photocatalytic Bromate Reduction Visible Light Hole Trapping/consumption Center Charge Carrier Separation
ISSN号	0926-3373
英文摘要	Bi quantum dots were deposited onto rutile TiO2 nanoparticles by a one-pot, solvent-thermal process to create the Bi/TiO2 (rutile) heterojunction photocatalyst. Due to the specific semimetal property of Bi, a metal to semiconductor transition occurred for Bi quantum dots, which endowed them with the hole trapping capability to enhance the charge carrier separation in rutile TiO2 and eliminate the need of sacrificial agents for the consumption of photogenerated holes in photocatalytic reduction process. The Bi/TiO2 (rutile) heterojunction photocatalyst demonstrated an efficient photocatalytic bromate reduction under visible light illumination without the addition of sacrificial agents in the reaction solution, and it could be easily regenerated for reuse. Different with previously reported noble/transition metal modifications as the electron trapping center, this study demonstrated a novel material design strategy of the introduction of hole trapping centers to create photocatalysts with strong photocatalytic reduction capabilities, which could be readily adopted for a broad range of technical applications. (C) 2017 Elsevier B.V. All rights reserved.; Bi quantum dots were deposited onto rutile TiO2 nanoparticles by a one-pot, solvent-thermal process to create the Bi/TiO2 (rutile) heterojunction photocatalyst. Due to the specific semimetal property of Bi, a metal to semiconductor transition occurred for Bi quantum dots, which endowed them with the hole trapping capability to enhance the charge carrier separation in rutile TiO2 and eliminate the need of sacrificial agents for the consumption of photogenerated holes in photocatalytic reduction process. The Bi/TiO2 (rutile) heterojunction photocatalyst demonstrated an efficient photocatalytic bromate reduction under visible light illumination without the addition of sacrificial agents in the reaction solution, and it could be easily regenerated for reuse. Different with previously reported noble/transition metal modifications as the electron trapping center, this study demonstrated a novel material design strategy of the introduction of hole trapping centers to create photocatalysts with strong photocatalytic reduction capabilities, which could be readily adopted for a broad range of technical applications. (C) 2017 Elsevier B.V. All rights reserved.
学科主题	Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
语种	英语
资助机构	National Natural Science Foundation of China [51672283, 51602316]; Basic Science Innovation Program of Shenyang National Laboratory for Materials Science [Y4N56R1161, Y5N56F2161]; "Geping Green Action"-123 Project on Environment Research and Education of Liaoning Province [CEPF2014-123-1-4]
公开日期	2018-01-10
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78940]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, Q (reprint author), Chinese Acad Sci, Inst Met Res, Environm Funct Mat Div, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Xiao, Jun,Yang, Weiyi,Li, Qi,et al. Bi quantum dots on rutile TiO2 as hole trapping centers for efficient photocatalytic bromate reduction under visible light illumination[J]. ELSEVIER SCIENCE BV,2017,218:111-118.
APA	Xiao, Jun,Yang, Weiyi,Li, Qi,&Li, Q .(2017).Bi quantum dots on rutile TiO2 as hole trapping centers for efficient photocatalytic bromate reduction under visible light illumination.ELSEVIER SCIENCE BV,218,111-118.
MLA	Xiao, Jun,et al."Bi quantum dots on rutile TiO2 as hole trapping centers for efficient photocatalytic bromate reduction under visible light illumination".ELSEVIER SCIENCE BV 218(2017):111-118.