Fe-based metallic glasses(Fe-MGs)are potential candidate catalysts for advanced oxidation processes(AOPs)for recalcitrant organic pollutant degradation.However,industrial wastewater and natural contam-inated sites usually contain abundant inorganic ions,like the chloride ion(Cl-),which significantly affect AOPs,but their influence on MG-activated AOPs still remains unclear.Through the study of three com-monly used oxidants,hydrogen peroxide(H2O2),peroxydisulfate(PDS),and peroxymonosulfate(PMS),the effect of Cl-on the FeSiB-catalyzed process of degradation of the typical azo dye Orange Ⅱ was inves-tigated.Evidence indicates that the addition of Cl-resulted in the monotonous inhibition of the degra-dation process when the H2O2/FeSiB and PDS/FeSiB systems were employed,but promoted effect was detected with the PMS/FeSiB system,which is different from the previously observed dual effect of Cl-.It is closely relative with FeSiB induced unique variety of degradation pathways,including radicals,non-radicals(102),and direct reduction degradation.Moreover,the presence of Cl-significantly affected the systems'absorbable organic halogen content and the amount of Fe leached into the solution.The results of this work will provide essential references for Fe-based MG used as AOP catalysts in field applications and the development of advanced MGs with excellent adaptability to complex environments.

Shuangqin Chen;Mai Li;Qingmin Ji;Tao Feng;Si Lan;KeFu Yao

School of Material Science and Engineering,Herbert Gleiter Institute of Nanoscience,Nanjing University of Science and Technology,Nanjing 210094,China;School of Material Science and Engineering,Nanjing Institute of Technology,Nanjing 211167,China;School of Material Science and Engineering,Tsinghua University,Beijing 100084,China

材料科学技术（英文版）

[1]Shuangqin Chen;Mai Li;Qingmin Ji;Tao Feng;Si Lan;KeFu Yao-.Effect of the chloride ion on advanced oxidation processes catalyzed by Fe-based metallic glass for wastewater treatment)[J].材料科学技术（英文版）,2022(22):49-58

FeSiB

Effect,chloride,advanced,oxidation,processes,catalyzed,by,metallic,wastewater,treatment,glasses,MGs,are,potential,candidate,catalysts,AOPs,recalcitrant,pollutant,degradation,However,industrial,natural,contam,inated,sites,usually,contain,abundant,inorganic,like,Cl,which,significantly,but,their,influence,activated,still,remains,unclear,Through,study,three,monly,used,oxidants,hydrogen,peroxide,H2O2,peroxydisulfate,PDS,peroxymonosulfate,PMS,effect,typical,azo,dye,Orange,inves,tigated,Evidence,indicates,that,addition,resulted,monotonous,inhibition,when,systems,were,employed,promoted,detected,different,from,previously,observed,dual,It,closely,relative,induced,unique,variety,pathways,including,radicals,direct,reduction,Moreover,presence,affected,absorbable,halogen,content,amount,leached,into,solution,results,this,work,will,provide,essential,references,field,applications,development,excellent,adaptability,complex,environments

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