三维有序大孔钙钛矿催化剂在挥发性有机物催化燃烧中的研究进展

摘要

催化燃烧是处理挥发性有机物(VOCs)的有效处理技术之一.催化燃烧的核心是制备高效稳定的催化剂,随着多孔材料制备技术的发展,具有三维有序大孔(3DOM)的钙钛矿催化剂表现出较好的催化燃烧稳定性和活性,受到人们普遍关注.本文结合近几年国内外3DOM钙钛矿催化剂的主要研究成果,在3DOM钙钛矿催化剂的结构、性能及制备方法等方面的研究成果概述的基础上,分析了其热稳定性、机械稳定性、疏水性、氧化还原性及酸碱性等功能化方面的最新进展,指出了目前3DOM钙钛矿催化剂亟待解决的问题,最后对今后的研究趋势进行了展望:胶体晶体模板的合成方法的改进、多功能性3DOM钙钛矿催化剂的制备及其对催化活性的影响机理的研究是今后发展的方向.%Catalytic combustion is one of the most effective technologies to remove volatile organic compounds (VOCs),and the key is the preparation of high efficient and stable catalysts.Three-dimensional ordered macroporous (3DOM) perovskite catalysts have attracted much attention owing to their excellent stability and activity in catalytic combustion of VOCs.This review analyzed the 3DOM perovskite-type catalysts for catalytic combustion in recent years.Firstly,the structure,properties and preparation methods of 3DOM perovskite-type catalysts were discussed.Then,the recent advances in their thermal stability,mechanical stability,hydrophobicity,oxidation reduction and acid and alkali were reviewed.Moreover,the problems to be solved were presented.Finally,it was also pointed out that future research should focus on the improvement of synthesis of colloidal crystal template,the preparation of multi-functional 3DOM perovskite catalyst and the influence mechanism responsible for the catalytic activity.