挥发性有机污染物光催化降解催化剂的研究进展  

Photocatalytic Degradation of Volatile Organic Pollutants:Advances in Catalysts

作　　者：王紫莎 刘俊 刘晓庆 WANG Zisha;LIU Jun;LIU Xiaoqing(School of Environmental and Safety Engineering,North University of China,Taiyuan 030051,China;School of Environmental,Tsinghua University,Beijing 100084,China;School of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]中北大学环境与安全工程学院,太原030051 [2]清华大学环境学院,北京100084 [3]太原理工大学化学化工学院,太原030024

出　　处：《材料导报》2023年第2期27-40,共14页Materials Reports

摘　　要：随着工业的发展,挥发性有机污染物(VOCs)的治理迫在眉睫。在众多消除VOCs的方法中,光催化技术一直备受关注,它能够将VOCs催化氧化生成二氧化碳(CO_(2))和水(H_(2)O)等无污染产物,不会产生二次污染。但光催化剂存在电导率低、过电位高、光诱导电荷高复合以及带隙不匹配等缺点,从而抑制了光催化性能的提升,进而限制了其实际应用。因此,提高光催化剂的催化活性和选择性,并且清楚了解光催化机理至关重要。目前文献报道中光催化剂催化性能提升的方法包括掺杂、染料敏化、贵金属负载、半导体复合等,不同的方法实现了能带结构调控、缺陷调控、形貌调控等,旨在增强半导体中光生载流子的流动能力以及增加可见光吸收,进而提升光催化性能。本文将文献报道的光催化剂分类,从贵金属催化剂、非贵金属催化剂、非金属催化剂以及金属有机框架(MOFs)催化剂出发进行综述,分别论述了国内外不同种类催化剂去除VOCs的研究进展。不同种类光催化剂的研究进展为开发高效光催化剂奠定了基础。The increasing concentration of volatile organic pollutants(VOCs)in the atmosphere caused mainly by industrial activities and their threat to human development have attracted wide attention.In many methods to eliminate VOCs,photocatalytic technology is regarded as a robust method to solve environmental pollution owing to its green,safe,efficient and utilization of sunlight.However,catalyst possesses a series of limitations,such as the inborn deficiency in visible light absorption,poor conductivity,high overpotential and fast recombination of electrons and holes,which greatly limits their further applications.Therefore,various strategies have been proposed to improve the photocatalytic activity and selectivity,such as the doping of metal and nonmetal,dye sensitization,adjusting the crystal faces,the formation of heterojunctions with other semiconductors and so on.This article summarizes the classification of photocatalysts reported in the literature,starting from precious metal catalysts,non-precious metal catalysts,non-metal catalysts and metal organic framework(MOFs)catalysts,and discusses the research progress of different types of catalysts at home and abroad to remove VOCs.The research progress of different kinds of photocatalysts lays the foundation for the development of high-efficiency photocatalysts.

关 键 词：光催化 挥发性有机污染物(VOCs) 金属催化剂 非金属催化剂 金属有机框架(MOFs) 

分 类 号：X511[环境科学与工程—环境工程]