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题名: Bi quantum dots on rutile TiO2 as hole trapping centers for efficient photocatalytic bromate reduction under visible light illumination
作者: Xiao, Jun;  Yang, Weiyi;  Li, Qi
发表日期: 2017-12-5
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.
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Recommended Citation:
Xiao, Jun,Yang, Weiyi,Li, Qi. 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.

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