Effect of the chloride ion on advanced oxidation processes catalyzed by Fe-based metallic glass for wastewater treatment

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

作者机构：School of Material Science and EngineeringHerbert Gleiter Institute of NanoscienceNanjing University of Science and TechnologyNanjing 210094China School of Material Science and EngineeringTsinghua UniversityBeijing 100084China School of Material Science and EngineeringNanjing Institute of TechnologyNanjing 211167China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2022年第117卷第22期

页      面：49-58页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081705[工学-工业催化] 0806[工学-冶金工程] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：This work was financially supported by the National Natural Science Foundation of China(Nos.52101195,51871120) the Natural Science Foundation of Jiangsu Province(Nos.BK20190480,BK20200019) the Fundamental Research Funds for the Central Universities(Nos.30920021156,30920010004) the GuangdongHong Kong-Macao Joint Laboratory for Neutron Scattering Science and Technology 

主　　题：Fe-based metallic glass Advanced oxidation processes Wastewater treatment Chlorine ion 

摘      要：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 contaminated sites usually contain abundant inorganic ions, like the chloride ion (Cl−), which significantly affectAOPs, but their influence on MG-activated AOPs still remains unclear. Through the study of three commonly used oxidants, hydrogen peroxide (H_(2)O_(2)), peroxydisulfate (PDS), and peroxymonosulfate (PMS), theeffect of Cl− on the FeSiB-catalyzed process of degradation of the typical azo dye Orange Ⅱ was investigated. Evidence indicates that the addition of Cl− resulted in the monotonous inhibition of the degradation process when the H_(2)O_(2)/FeSiB and PDS/FeSiB systems were employed, but promoted effect wasdetected 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, nonradicals (^(1)O_(2)), and direct reduction degradation. Moreover, the presence of Cl− significantly affected thesystems’ absorbable organic halogen content and the amount of Fe leached into the solution. The resultsof this work will provide essential references for Fe-based MG used as AOP catalysts in field applicationsand the development of advanced MGs with excellent adaptability to complex environments.