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首页> 外文期刊>Journal of Materials Science >Chemical reduction implanted oxygen vacancy on the surface of 1D MoO3-x/g-C3N4 composite for boosted LED light-driven photoactivity
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Chemical reduction implanted oxygen vacancy on the surface of 1D MoO3-x/g-C3N4 composite for boosted LED light-driven photoactivity

机译：化学降低植入氧气空位在1D MOO3-X / G-C3N4复合材料表面上的升压LED光驱动光接触

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摘要

There is an important demand for cheap and efficient photocatalysts for dual functional applications. In the study, we report novel 1D MoO3-x/g-C3N4 composite using ethanol as a reducing agent to introduce oxygen vacancy (O-v). The presence of oxygen vacancy has been confirmed by X-ray photoelectron (XPS), electron spin resonance spectra and redox experiments. Compared with MoO3-x, g-C3N4 and fully oxidized MoO3/g-C3N4, the proposed MoO3-x/g-C3N4 composite exhibited a higher photoactivity, effectively degrading methyl orange in 100min and completely inactivating Escherichia coli in 15min under visible light-emitting diode irradiation. Trapping experiments demonstrated that holes (h(+)) and superoxide radicals ( O 2-) were the major active species involved in the photocatalytic process. The enhanced photoactivity was attributed to: (1) broadening of the light absorption range associated with the oxygen vacancy, which also served as electron mediators, facilitating the separation of electron-hole pairs, and (2) the 1D nanostructure of MoO3-x, which increased the lifetime of charge carriers. The results provide evidence of the advantages of the introduction of oxygen vacancy with a view to broadening the applications of this photocatalyst.
机译：对双功能应用的便宜和高效光催化有一个重要的需求。在研究中，我们使用乙醇作为还原剂报告新型1D MOO3-X / G-C3N4复合物，以引入氧空位（O-V）。通过X射线光电子（XPS），电子自旋共振谱和氧化还原实验证实了氧空位的存在。与MOO3-X，G-C3N4和完全氧化的MOO3 / G-C3N4相比，所提出的MOO3-X / G-C3N4复合材料表现出更高的光脱力，有效地降解100min的甲基橙，并在可见光下完全灭活15分钟的大肠杆菌 - 发射二极管照射。诱捕实验证明了孔（H（+））和超氧化物自由基（O 2-）是参与光催化过程的主要活性物质。增强的可光度归因于：（1）扩大与氧空位相关的光吸收范围，其也用作电子介质，促进了电子 - 空穴对的分离，（2）Moo3-x的1D纳米结构，增加了电荷载体的寿命。结果提供了氧气空位的优势的证据，以扩大该光催化剂的应用。

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  • 来源
    《Journal of Materials Science》 |2019年第7期|共16页
  • 作者

    Huang Liying; Zhang Fei; Li Yeping; Wang Hao; Wang Qian; Wang Chaobao; Xu Hui; Li Huaming;

  • 作者单位

    Jiangsu Univ Sch Chem &

    Chem Engn Zhenjiang 212013 Peoples R China;

    Jiangsu Univ Sch Chem &

    Chem Engn Zhenjiang 212013 Peoples R China;

    Jiangsu Univ Sch Pharm Zhenjiang 212013 Peoples R China;

    Jiangsu Univ Sch Pharm Zhenjiang 212013 Peoples R China;

    Jiangsu Univ Sch Pharm Zhenjiang 212013 Peoples R China;

    Jiangsu Univ Sch Pharm Zhenjiang 212013 Peoples R China;

    Jiangsu Univ Inst Energy Res Zhenjiang 212013 Peoples R China;

    Jiangsu Univ Inst Energy Res Zhenjiang 212013 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
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