Fenton technology,as a typical advanced oxidation processes(AOPs),can generate reactive oxygen species(ROS)of strong oxidation capacity to degrade organic pollutants,which has attracted wide attention.However,it is ac...Fenton technology,as a typical advanced oxidation processes(AOPs),can generate reactive oxygen species(ROS)of strong oxidation capacity to degrade organic pollutants,which has attracted wide attention.However,it is accompanied by the slow Fe^(3+)/Fe^(2+)cycle rate,easy to generate iron sludge and so on.Recently,it has been proven that the inorganic cocatalysts represented by MoS_(2)can effectively solve the above problems.Meanwhile,MoS_(2)can accelerate the activation of peroxy mono sulfate(PMS)and peroxodisulfate(PDS)by Fe^(2+).In this paper,MoS_(2)as the cocatalyst in H_(2)O_(2)+Fe^(2+),PMS+Fe^(2+)and PDS+Fe_(2+)were comprehensively reviewed.Specially,the cycling processes of Fe^(3+)/Fe^(2+)in different systems,the cocatalytic effect of MoS_(2)by the exposed active sites,the ROS generation mechanism as well as the microscopic mechanism during the reaction were elaborated emphatically.The results indicate that the reductive active sites on the surface of MoS_(2)can promote the regeneration of Fe^(2+)through the cycle between Fe^(3+)/Fe^(2+)and Mo^(4+)/Mo^(5+)/Mo^(6+).Thus,ROS such as·OH,SO_4^(·-)and ^(1)O_(2)with strong oxidizing property can be produced to improve the degradation efficiency of organic pollutants.At last,the challenges and developments of MoS_(2)cocatalysts in AOPs for practical applications were prospected.This review contributes to a deeper understanding of the cocatalytic effect of two-dimensional metal sulfides in AOPs and facilitates their industrial application.展开更多
基金financially supported by the National Natural Science Foundation of China(Nos.52370073,5236005)Program for Science and Technology Innovation Team in Universities of Henan Province(24IRTSTHN017)+3 种基金Natural Science Foundation of Henan Province(212300410336)Key Scientific and Technological Project of Henan Province(222102320188)Key Project of Science and Technology Research of Henan Provincial Department of Education(21A430008)Jiangxi Provincial Natural Science Foundation(20224ACB213010)。
文摘Fenton technology,as a typical advanced oxidation processes(AOPs),can generate reactive oxygen species(ROS)of strong oxidation capacity to degrade organic pollutants,which has attracted wide attention.However,it is accompanied by the slow Fe^(3+)/Fe^(2+)cycle rate,easy to generate iron sludge and so on.Recently,it has been proven that the inorganic cocatalysts represented by MoS_(2)can effectively solve the above problems.Meanwhile,MoS_(2)can accelerate the activation of peroxy mono sulfate(PMS)and peroxodisulfate(PDS)by Fe^(2+).In this paper,MoS_(2)as the cocatalyst in H_(2)O_(2)+Fe^(2+),PMS+Fe^(2+)and PDS+Fe_(2+)were comprehensively reviewed.Specially,the cycling processes of Fe^(3+)/Fe^(2+)in different systems,the cocatalytic effect of MoS_(2)by the exposed active sites,the ROS generation mechanism as well as the microscopic mechanism during the reaction were elaborated emphatically.The results indicate that the reductive active sites on the surface of MoS_(2)can promote the regeneration of Fe^(2+)through the cycle between Fe^(3+)/Fe^(2+)and Mo^(4+)/Mo^(5+)/Mo^(6+).Thus,ROS such as·OH,SO_4^(·-)and ^(1)O_(2)with strong oxidizing property can be produced to improve the degradation efficiency of organic pollutants.At last,the challenges and developments of MoS_(2)cocatalysts in AOPs for practical applications were prospected.This review contributes to a deeper understanding of the cocatalytic effect of two-dimensional metal sulfides in AOPs and facilitates their industrial application.
