光催化氧化技术用于室内挥发性有机化合物净化的研究进展

Research Progress of Photocatalytic Oxidation for Indoor Purification of Volatile Organic Compounds

室内环境中存在的挥发性有机化合物(VOCs)对人体健康有害,在多种空气污染修复技术中,光催化氧化技术(PCO)是最具有发展潜力的方法之一,也是近20年来空气污染修复技术领域研究的热点之一。二氧化钛(TiO_(2))是目前研究最多的光催化降解气态VOCs的光催化剂之一。综述了光催化氧化技术在去除空气中VOCs污染物方面的应用,简要介绍了光催化氧化的基本原理、常见的TiO_(2)基光催化剂,并就光催化剂的特性(如结晶度、比表面积和表面化学性质)与光催化活性之间的关系对PCO过程的影响进行了讨论,以期为后续的相关研究提供参考。

Volatile organic compounds(VOCs)in indoor environment are harmful to human health.Among various air pollution remediation technologies,photocatalytic oxidation(PCO)is one of the most promising methods,and also one of the research hotspots in the field of air pollution remediation technologies in the past two decades.Titanium dioxide(TiO_(2))is one of the most studied photocatalysts for the photocatalytic degradation of gaseous VOCs.In this paper,application of photocatalytic oxidation technology in the removal of VOCs pollutants in the air was reviewed,and the basic principles of photocatalytic oxidation and common TiO_(2)based photocatalysts were introduced.The influence of the relationship between the characteristics of photocatalysts(such as crystallinity,surface area and surface chemistry)and photocatalytic activity on PCO process was also discussed,in order to provide reference for future studies.