Visible light photocatalytic enhanced heterogeneous cobalt catalyzed peroxymonosulfate synergistic process to degradation atrazine:Efficiency,influencing factors,by-products removal and mechanism
简介：This study developed a novel heterogeneous Vis-Photo+Fenton-like system by integrating visible-light-responsive Co3O4/TiO2 photocatalysis with peroxymonosulfate(PMS)activation for efficient atrazine(ATZ)degradation.The synergistic process achieved complete ATZ removal within 60 min under near-neutral pH(6.9),outperform-ing individual Fenton-like(39％)and photocatalytic(24％)processes.Key factors influencing the degradation efficiency included light sources(UV＞visible),pH(optimal at 6.9),catalyst dosage(0.01 g Co3O4/TiO2),and PMS:ATZ molar ratio(1:2).The system exhibited a synergistic coefficient of 5.03(degradation)and 1.97(miner-alization),attributed to enhanced radical generation and accelerated Co3+/Co2+redox cycling through photoin-duced electron transfer.Intermediate analysis revealed dealkylation,dechlorination,and oxidation pathways,with reduced toxicity of by-products(e.g.,CEAT,CIAT)confirmed by ecotoxicity assessments.The mineraliza-tion efficiency(Vis-Photo+Fenton-like)reached 83.1％,significantly higher than that of standalone processes(Fenton-like:43.2％;photocatalysis:30.5％).The catalyst demonstrated excellent stability(nearly 90％recov-ery,＜1 μg/L Co leaching)and practical applicability.This study provides an efficient,sludge-free,and solar-compatible strategy for eliminating persistent herbicides in water treatment.展开
学者：QingkongChenJieyuXIAFengjunLiuJianpingFANPENGYanMikaSillan
关键词：Synergistic effectsulfate radicalFenton-likePhotocatalysisvisible lightAtrazine(ATZ)
在线出版日期：2026-03-03 （网站首发日期）
