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首页> 外文期刊>Materials Science and Engineering >BiOBr@UiO-66 photocatalysts with abundant activated sites for the enhanced photodegradation of rhodamine b under visible light irradiation
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BiOBr@UiO-66 photocatalysts with abundant activated sites for the enhanced photodegradation of rhodamine b under visible light irradiation

机译：BioBR @ UIO-66光催化剂，具有丰富的活性位点，用于在可见光照射下增强罗丹明B的光降解

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摘要

In this work, bismuth bromideoxide (BiOBr), a typical visible-light photocatalyst, was coated with Zr-based MOFs (UiO-66) to prepare the BiOBr@UiO-66 photocatalysts with different mole ratios by the solvothermal method. The core-shell BiOBr@UiO-66 photocatalysts with abundant activated sites was obtained due to the modification of UiO-66 on the surface of BiOBr. The structure and properties of the BiOBr@UiO-66 photocatalysts were characterized by several methods. The 30％ BiOBr@UiO-66 photocatalysts exhibited the biggest photodegradation rate constant (k = 0.0669 min~(-1)) for RhB under visible-light irradiation than pure BiOBr (k = 0.0281 min~(-1)) and UiO-66 (k = 0.0041 min~(-1)). Additionally, the 30％ BiOBr@UiO-66 photocatalysts exhibited the enhanced photocatalytic activity and stable recyclability due to the effective electron-hole separation and synergistic effect. The photocatalytic mechanism of the BiOBr@UiO-66 photocatalysts for RhB, which contained a photosensitization process, was discussed with the trapping experiment of active species and the proposed energy band alignments.
机译：在这项工作中，铋溴氧化物（BioBR）是典型的可见光光催化剂涂覆有Zr基MOF（UIO-66），通过溶剂热法用不同的摩尔比制备BioBR @ UIO-66光催化剂。由于UIO-66在BioBR表面上的改变，获得了具有丰富活化位点的核心壳BioBR @ UIO-66光催化剂。通过几种方法表征了BioBR @ UIO-66光催化剂的结构和性质。 30％BioBR @ UIO-66光催化剂在可见光照射下表现出最大的光降解速率常数（K = 0.0669min〜（-1））比纯BioBR（k = 0.0281分钟〜（-1））和UIO- 66（k = 0.0041分钟〜（-1））。此外，30％BioBR @ UIO-66光催化剂由于有效的电子空穴分离和协同效应，表现出增强的光催化活性和稳定的再循环性。 BioBR @ UIO-66光催化剂的rHB的光催化机制，其含有光敏性化过程的rhB，用活性物种的捕获实验和所提出的能带对准进行探讨。

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  • 来源
    《Materials Science and Engineering》 |2021年第9期|115297.1-115297.9|共9页
  • 作者

    Hailin Tian; Yan Gu; Houle Zhou; Yingping Huang; Yanfen Fang; Ruiping Li; Changcun Tang;

  • 作者单位

    College of Biology & Pharmacy China Three Gorges University Yichang 443002 Hubel China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University Yichang 443002 Hubei China;

    College of Hydraulic & Environmental Engineering China Three Gorges University Yichang 443002 Hubei China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University Yichang 443002 Hubei China;

    College of Biology & Pharmacy China Three Gorges University Yichang 443002 Hubel China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University Yichang 443002 Hubei China;

    College of Hydraulic & Environmental Engineering China Three Gorges University Yichang 443002 Hubei China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University Yichang 443002 Hubei China;

    College of Biology & Pharmacy China Three Gorges University Yichang 443002 Hubel China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University Yichang 443002 Hubei China;

    College of Hydraulic & Environmental Engineering China Three Gorges University Yichang 443002 Hubei China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University Yichang 443002 Hubei China;

    Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University Yichang 443002 Hubei China School of Materials Science and Engineering Nanchang University Nanchang 330000 Jiangxi China;

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  • 关键词

    BiOBr/UiO-66; Photodegradation; Organic pollutants; Visible light irradiation;

    机译：biobr / uio-66;光降解;有机污染物;可见光辐照;

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