光/电催化降解室内空气甲醛的最新研究进展

Recent Advance of Photo/Electrocatalytic Degradation of Formaldehyde in Indoor Air

甲醛(HCHO)俗称福尔马林,是一种无色、具有辛辣气味的挥发性有机化合物,室内环境中,人体吸入的HCHO主要通过酶促途径在体内发生代谢,这会对人类健康造成十分严重的危害。目前,为了有效去除室内空气中的HCHO,降低HCHO污染,许多降解HCHO的工艺技术发展迅猛。其中,光/电催化降解工艺是最受关注的去除室内空气HCHO的技术之一。本文对室内空气HCHO的来源、危害、光催化降解HCHO、电催化降解HCHO以及光电催化降解HCHO的发展、工艺和催化机理等进行了全方位的系统总结,为未来高效去除室内空气HCHO,减缓室内HCHO污染提供强有力的指导。

Formaldehyde,commonly known as formalin,is a colorless and pungent volatile organic compound.Inhaled formaldehyde is mainly metabolized in the body through enzymatic pathway,which is very harmful to human health and indoor environment.In order to effectively remove formaldehyde from indoor air,many formaldehyde degradation technologies have developed rapidly.Among them,photocatalytic/electrocatalytic degradation technology is one of the most concerned technologies to remove formaldehyde from indoor air.This paper systematically summarizes the source and harm of formaldehyde from indoor air,photocatalytic,electrocatalytic and photo-electrocatalytic degradation of formaldehyde,as well as the development,process and catalytic mechanism of photocatalytic degradation of formaldehyde from indoor air,which can provide strong guidance for efficient removal of formaldehyde from indoor air and mitigation of indoor formaldehyde pollution in the future.