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化学进展 DOI: 10.7536/PC231202   后一篇

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光催化固氮催化剂性能提升策略分析

郭丽君1,*, 杨红1, 邵圣娟1, 刘音圻1, 刘建新2,*   

  1. 1.太原工业学院化学与化工系,山西 太原 030008;
    2.太原理工大学化学工程与技术学院,山西 太原 030027
  • 收稿日期:2023-12-14 修回日期:2024-02-12
  • 通讯作者: *e-mail: 郭丽君,E-mail：tyguolijun@163.com;刘建新,E-mail：liujx0519@163.com.
  • 基金资助:
    国家自然科学基金（21978187）; 山西省基础研究计划资助项目(202203021221058); 山西省高等学校科技创新计划项目(2022L535).
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Performance improvement strategy of photocatalytic ammonia synthesis catalyst

Lijun GUO1,*, Hong YANG1, Shengjuan SHAO1, Yinqi LIU1, Jianxin LIU2,*   

  1. 1. Department of Chemistry and Chemical Engineering, Taiyuan Institute of Technology, Taiyuan 030008, ShanXi, China;
    2. College of Chemical Engineering and technology, Taiyuan University of Technology, Taiyuan 030024, ShanXi, China
  • Received:2023-12-14 Revised:2024-02-12
  • Supported by:
    National Natural Science Foundation of China (No. 21978187); Fundamental Research Program of Shanxi Province (No. 202203021221058); The Scientific Technological Innovation Programs of Higher Education Institutions in Shanxi (No. 2022L535).
光催化固氮以太阳能作驱动力,常温常压下利用N2和H2O直接产生NH3,工艺零碳排放,是极具前景的人工固氮方式之一,近年来受到研究者们的广泛关注。受限于N2难活化、光生载流子利用率低及太阳光利用率低等因素制约,产氨效率依然不高,因此提升产氨效率是光催化固氮领域的研究重点。从N2吸附活化、载流子分离与迁移、表面反应三个重要过程出发,通过对催化剂进行合理改性,在温和条件下促进N2的活化和转化,并高效产生NH3是极具前景的。因此本文主要从光催化剂改性方面进行研究,从N2分子吸附和活化能力、光生电子的转移能力和光利用等性能提升方面对产氨效率的影响进行概述,对近几年在此方面的研究进行分析,最后对光催化固氮催化剂的改性策略进行总结。
关键词： 光催化固氮, 光催化剂, 活性位点, 光生电子转移能力, 形貌调控
Photocatalytic nitrogen fixation is driven by solar energy, N2 and H2O are used to directly produce NH3 at normal temperature and pressure, and the process has zero carbon emission. It is one of the most promising artificial nitrogen fixation methods, and has attracted wide attention from researchers in recent years. Limited by the difficult activation of N2, low utilization rate of photogenerated carrier and low utilization rate of sunlight, the ammonia production efficiency is still not high, so improving the ammonia production efficiency is the focus of research in the field of photocatalytic ammonia synthesis. Starting from the three important processes of N2 adsorption activation, carrier separation and migration, and surface reaction, it is very promising to promote the activation and conversion of N2 under mild conditions and produce NH3 efficiently by reasonable modification of the catalyst. This paper mainly studied the modification of photocatalyst, summarized the influence of N2 molecular adsorption and activation ability, photogenerated electron transfer ability and light utilization on the ammonia production efficiency, analyzed the research in recent years in these fields, and finally summarized the modification strategy of photocatalytic ammonia synthesis catalyst.
Key words: photocatalytic synthesis of ammonia, photocatalyst, active site, photogenic electron transfer ability, morphology control

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