摘要
氮氧化物(NO_x)及挥发性有机污染物(VOCs)是二次PM2.5形成的重要前体物,也是国内雾霾形成的重要因素之一。光催化技术具有反应条件温和、能耗低和无需额外加入反应物等优点,已经成为降解大气环境中NO_x及VOCs的有效技术手段。光催化技术的核心是光催化剂,光催化技术实现产业化应用的关键是研制出高效宽谱响应的光催化剂。该文总结了光催化剂TiO_2的制备方法,探讨了改进TiO_2光生电子-空穴对的复合率较高和光吸收波长范围狭窄两个问题的方法。
Nitrogen oxides(NOx) and volatile organic compounds(VOCs) are important precursors of PM2.5 and important factors of smog formation in China. Photocatalysis technology, with its advantages of mild reaction conditions, low energy consumption and no additional reactants, has become an effective technical means to degrade NOx and VOCs in the atmosphere. Photocatalyst is the core of photocatalysis technology, and the key to industrialization of photocatalysis technology is to develop photocatalyst with high efficiency and broad spectral response. In this paper, preparation methods of photocatalyst TiO2 were summarized. Besides, solutions to the problems of high recombination rate of photogenerated electron-hole pairs and narrow wavelength range of optical absorption were discussed.
作者
王佳佳
李福文
熊仁艳
WANG Jiajia;LI Fuwen;XIONG Renyan(Aluminum Corporation of China Limited, Beijing 100082)
出处
《石油化工腐蚀与防护》
CAS
2019年第2期26-29,共4页
Corrosion & Protection In Petrochemical Industry
基金
国家环境保护部技术管理项目"再生铝行业污染防治技术政策"(1441400100002-22)
