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2D Bismuthene Metal Electron Mediator Engineering Super Interfacial Charge Transfer for Efficient Photocatalytic Reduction of Carbon Dioxide

机译:2D Biscuthene金属电子介质工程超界面电荷转移,用于有效的光催化还原二氧化碳

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摘要

The interfacial charge transfer still limits the photoactivity of artificial Z-scheme photocatalysts although they showed complementary light absorption and a strong photoredox ability. In this study, layered metallene is designed as an efficient electron mediator for constructing a C3N4/bismuthene/BiOCl 2D/2D/2D Z-scheme system. This bismuthene serves as a bridge processing superior charge conductibility, abundant metal-semi-conductor contact sites, and the shortened charge diffusion distance, enhancing the photocatalytic CO2 reduction reaction activity and stability. Density functional theory calculations show that the bismuthene creates a built-in electric field and congregates interfacial electrons, which is confirmed by the stable and consistent emission of the ultrafast transient absorption spectra. This work gives new insight into the interface design of Z-scheme photocatalysts by selecting a novel metallene electron mediator.
机译:界面电荷转移仍然限制了人工Z型光催化剂的光活性,尽管它们表现出互补的光吸收和很强的光氧化还原能力。在本研究中,层状金属烯被设计为一种高效的电子介质,用于构建C3N4/铋烯/BiOCl 2D/2D/2D Z方案系统。这种铋烯作为桥梁处理优越的电荷传导性,丰富的金属-半导体接触点,缩短了电荷扩散距离,提高了光催化CO2还原反应的活性和稳定性。密度泛函理论计算表明,铋烯产生内建电场,聚集界面电子,超快瞬态吸收光谱的稳定一致发射证实了这一点。这项工作通过选择一种新型的金属烯电子介体,为Z型光催化剂的界面设计提供了新的见解。

著录项

  • 来源
    《ACS applied materials & interfaces》 |2021年第18期|共11页
  • 作者单位

    Jilin Univ State Key Lab Automot Simulat &

    Control Sch Mat Sci &

    Engn Changchun 130012 Peoples R China;

    Jilin Univ State Key Lab Automot Simulat &

    Control Sch Mat Sci &

    Engn Changchun 130012 Peoples R China;

    Jilin Univ State Key Lab Automot Simulat &

    Control Sch Mat Sci &

    Engn Changchun 130012 Peoples R China;

    Jilin Univ State Key Lab Automot Simulat &

    Control Sch Mat Sci &

    Engn Changchun 130012 Peoples R China;

    Harbin Normal Univ Key Lab Photon &

    Elect Bandgap Mat Minist Educ Harbin 150025 Peoples R China;

    Jilin Univ Inst Atom Mol Phys Changchun 130012 Peoples R China;

    Jilin Univ State Key Lab Automot Simulat &

    Control Sch Mat Sci &

    Engn Changchun 130012 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    bismuthene; C3N4; BiOCl; photocatalytic CO2RR; Z-scheme;

    机译:铋烯;C3N4;生物化学;光催化CO2R;Z-方案;
  • 入库时间 2022-08-20 20:23:42

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