Directional deep oxidation of toluene via phenolized pathway—A review concerning dominant factors involved in photocatalysis  

作　　者：Mingxia Lu Jinmin Wu Yan Luo Yisheng Cao Lixia Yang Shuqu Zhang 

机构地区：[1]Key Laboratory of Jiangxi Province for Persistent Prevention Control and Resource Reuse,Nanchang Hangkong University,Nanchang 330063,China

出　　处：《Frontiers of Environmental Science & Engineering》2025年第2期181-203,共23页环境科学与工程前沿(英文)

基　　金：supported by the National Natural Science Foundation of China(Nos.52070092 and 52260016);the Key Laboratory of Jiangxi Province for Persistent Pollutants Prevention Control and Resource Reuse(No.2023SSY02061);。

摘　　要：Photocatalytic oxidation through semiconductor photocatalysis is an efficient and green technology for pollutant removal,which has been widely applied to degrade volatile organic chemicals under ambient conditions.However,most of reports focus on the reduction of VOCs concentration while ignore the generation of toxic intermediates,as well as the corresponding secondary pollution.Therefore,it is necessary to further explore how to timely achieve efficient and deep oxidation of VOCs.In this review,we undertake a detailed analysis of photocatalytic degradation of toluene,a representative compound of aromatic hydrocarbon VOCs,and identify the most capable phenolized pathway governed by hydroxyl radicals(·OH).With this pathway,no toxic intermediate like benzene is produced during the photocatalysis.The driving factor,oxygen vacancy(OV),for fueling the generation of ·OH is highlighted and the specific approaches including doping engineering and co-catalyst loading that can create rich OVs in semiconductor photocatalysts are described.Furthermore,the challenges and opportunities faced by the phenolized pathway in the future development are prospected.

关 键 词：Toluene degradation Oxygen vacancy PHOTOCATALYSIS Phenolized pathway 

分 类 号：O62[理学—有机化学]