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首页> 外文期刊>Chemosphere >Boosted charge transfer in dual Z-scheme BiVO_4@ZnIn_2S_4/Bi_2Sn_2O_7 heterojunctions: Towards superior photocatalytic properties for organic pollutant degradation
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Boosted charge transfer in dual Z-scheme BiVO_4@ZnIn_2S_4/Bi_2Sn_2O_7 heterojunctions: Towards superior photocatalytic properties for organic pollutant degradation

机译：双Z方案Bivo_4 @ Znin_2S_4 / Bi_2SN_2O_7异质函数：朝向卓越的光催化性能进行有机污染物降解

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摘要

A core-shell structured dual Z-scheme ternary photocatalyst BiVO4@ZnIn2S4/Bi2Sn2O7 was fabricated via hydrothermal and heat-circumfluence strategy. With ZnIn2S4 serving as a bridge to connect BiVO4 and Bi2Sn2O7, the developed ternary catalyst displayed boosted charge transfer and spatial separation capabilities. The effect of mass ratios of BiVO4@ZnIn2S4 and Bi2Sn2O7 on photodegradation efficiency under visible light irradiation was explored. The optimal ternary heterojunction photocatalyst possessed remarkable photocatalytic rate constant for Rhodamine B (RhB) degradation, which was 63 and 12 times higher than that of BiVO4 and Bi2Sn2O7, respectively. In addition, the as-prepared ternary photocatalyst had good universality. Notably, the novel dual Z-scheme photocatalysts could improve the separating/transferring efficiency and reduction/oxidation ability of charge carriers. Meanwhile, the hierarchical structure offered sufficient reaction sites for photodegradation. This work provides a new insight into the rational design of ternary dual Z-scheme photocatalysts. (C) 2021 Elsevier Ltd. All rights reserved.
机译：通过水热和热环策略制造核 - 壳结构双Z方案三元光催化剂BIVO4 @ Znin2S4 / Bi2SN2O7。 Znin2S4用作连接BIVO4和BI2SN2O7的桥梁，开发的三元催化剂显示出提升电荷转移和空间分离能力。探讨了Bivo4 @ Znin2S4和Bi2Sn2O7对可见光照射下光降解效率的质量比的影响。最佳的三元杂结明光催化剂具有显着的罗丹明B（RHB）降解的光催化速率常数，其分别比Bivo4和Bi2Sn2O7高63和12倍。此外，制备的三元光催化剂具有良好的普遍性。值得注意的是，新型双Z方案光催化剂可以改善电荷载体的分离/转移效率和还原/氧化能力。同时，等级结构提供了足够的反应位点来光降解。这项工作提供了对三元双Z方案光催化剂合理设计的新洞察。 （c）2021 elestvier有限公司保留所有权利。

著录项

  • 来源
    《Chemosphere》 |2021年第8期|130226.1-130226.10|共10页
  • 作者

    Zhang Di; Yang Zizhen; Hao Juanyuan; Zhang Tianyue; Sun Quan; Wang You;

  • 作者单位

    Sch Mat Sci & Engn Harbin Inst Technol Harbin 150001 Peoples R China;

    Sch Mat Sci & Engn Harbin Inst Technol Harbin 150001 Peoples R China;

    Sch Mat Sci & Engn Harbin Inst Technol Harbin 150001 Peoples R China;

    Sch Mat Sci & Engn Harbin Inst Technol Harbin 150001 Peoples R China;

    Sch Mat Sci & Engn Harbin Inst Technol Harbin 150001 Peoples R China;

    Sch Mat Sci & Engn Harbin Inst Technol Harbin 150001 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Dual Z-scheme; Ternary heterojunction; BiVO4@ZnIn2S4/Bi2Sn2O7; Core-shell structure; Photocatalysis;

    机译：双Z方案;三元异性结;Bivo4 @ Znin2S4 / Bi2Sn2O7;核心壳结构;光催化;

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