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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.
2017-12-05
发表期刊ELSEVIER SCIENCE BV
ISSN0926-3373
卷号218页码:111-118
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.
部门归属[xiao, jun ; yang, weiyi ; li, qi] chinese acad sci, inst met res, environm funct mat div, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [xiao, jun] univ chinese acad sci, beijing 100049, peoples r china
关键词Bi Quantum Dots Photocatalytic Bromate Reduction Visible Light Hole Trapping/consumption Center Charge Carrier Separation
学科领域Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
资助者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]
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/78940
专题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.
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