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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
Source PublicationELSEVIER SCIENCE BV
ISSN0926-3373
Volume218Pages:111-118
AbstractBi 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.
description.department[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
KeywordBi Quantum Dots Photocatalytic Bromate Reduction Visible Light Hole Trapping/consumption Center Charge Carrier Separation
Subject AreaChemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
Funding OrganizationNational 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]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78940
Collection中国科学院金属研究所
Corresponding AuthorLi, Q (reprint author), Chinese Acad Sci, Inst Met Res, Environm Funct Mat Div, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
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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