光催化固氮催化剂性能提升策略分析  

Performance Improvement Strategy of Photocatalytic Ammonia Synthesis Catalyst

作　　者：郭丽君 杨红 邵圣娟 刘音圻 刘建新 Lijun Guo;Hong Yang;Shengjuan Shao;Yinqi Liu;Jianxin Liu(Department of Chemistry and Chemical Engineering,Taiyuan Institute of Technology,Taiyuan 030008,China;College of Chemical Engineering and Technology,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原工业学院化学与化工系,太原030008 [2]太原理工大学化学工程与技术学院,太原030024

出　　处：《化学进展》2024年第6期939-948,共10页Progress in Chemistry

基　　金：国家自然科学基金(No.21978187);山西省基础研究计划资助项目(No.202203021221058);山西省高等学校科技创新计划项目(No.2022L535);太原工业学院引进人才科研资助项目(No.2024KJ013)资助。

摘　　要：光催化固氮以太阳能作驱动力,常温常压下利用N_(2)和H_(2)O直接产生NH_(3),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N_(2)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N_(2)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N_(2)的活化和转化,并高效产生NH_(3)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N_(2)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。Photocatalytic nitrogen fixation is driven by solar energy.N_(2)and H2O are used to directly produce NH_(3)at normal temperature and pressure,and the process has zero carbon emissions.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 N_(2),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 N_(2)adsorption activation,carrier separation and migration,and surface reaction,it is very promising to promote the activation and conversion of N_(2)under mild conditions and produce NH_(3)efficiently by reasonable modification of the catalyst.This paper mainly studied the modification of photocatalysts,summarized the influence of N_(2)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.

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 

分 类 号：TQ426[化学工程]