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High-efficiency photocatalytic performance and mechanism of silver-based metal-organic framework

机译:银基金属有机骨架的高效光催化性能及机理

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摘要

Environmental pollution and energy shortages seriously restrict the development of society. Photocatalytic oxidation technology can directly use solar energy to drive a series of chemical reactions. It has the advantages of low energy consumption, mild reaction conditions, and no secondary pollution, and is an effective method to solve organic pollutions in water. The key to achieve this process is to find and design efficient photocatalytic materials. In this paper, a novel silver-based metal-organic framework (Ag-MOF) [{Ag(H(2)btc)}{Ag-2(Hbtc)}] n (1) (H(3)btc 5 1,3,5-trimesic acid) is designed that exhibits a high performance in the photocatalytic degradation of methylene blue (MB). The process of photocatalytic degradation of MB conforms to pseudo first-order kinetics, and the rate is the fastest at pH 3 (K = 0.2654). Meanwhile, the photocatalytic mechanism of 1 is analyzed by in situ electron paramagnetic resonance (EPR) and ESI-MS spectra. The results are helpful for in situ research of the photocatalytic mechanism of MOFs.
机译:环境污染和能源短缺严重制约着社会的发展。光催化氧化技术可以直接利用太阳能来驱动一系列化学反应。它具有能耗低,反应条件温和,无二次污染的优点,是解决水中有机污染的有效方法。实现此过程的关键是找到和设计有效的光催化材料。在本文中,一种新型的银基金属有机框架(Ag-MOF)[{Ag(H(2)btc)} {Ag-2(Hbtc)}] n(1)(H(3)btc 5 1 (3,5-三苯甲基酸)被设计为在亚甲基蓝(MB)的光催化降解中表现出高性能。 MB的光催化降解过程符合假一级反应动力学,并且在pH 3时速率最快(K = 0.2654)。同时,通过原位电子顺磁共振(EPR)和ESI-MS光谱分析了1的光催化机理。这些结果有助于原位研究MOFs的光催化机理。

著录项

  • 来源
    《Journal of Materials Research》 |2019年第6期|991-998|共8页
  • 作者

    Yin Xiu-Ju; Zhu Long-Guan;

  • 作者单位

    Zhejiang Univ, Dept Chem, Hangzhou 310027, Zhejiang, Peoples R China;

    Hechi Univ, Sch Chem & Biol Engn, Yizhou 546300, 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《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    mechanism; MOFs; performance; silver;

    机译:机制MOFs性能银;

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