·94·化工环保ENVIRONMENTALPROTECTIONOFCHEMICALINDUSTRY2023年第43卷第1期材料药剂nZVI-Ni/MCM-41活化过硫酸盐降解左氧氟沙星李春琴，邹亚辰，贾小宁（兰州理工大学石油化工学院，甘肃兰州730050）［摘要］采用液相还原法将纳米零价铁镍（nZVI-Ni）双金属材料负载于介孔材料MCM-41上，制备成复合催化剂nZVI-Ni/MCM-41，采用TEM、XRD和XPS等方法对所制备的样品进行了表征。以左氧氟沙星（LOF）为目标污染物，考察了nZVI-Ni/MCM-41活化过硫酸盐（PS）降解LOF的效果。结果表明，在LOF质量浓度为50mg/L、nZVI-Ni/MCM-41投加量为1.0g/L、PS投加量为0.10g/L、铁镍摩尔比为10∶1、pH=7.3的条件下，LOF去除率达93.14%。自由基猝灭实验表明，反应过程中同时存在SO4-·和·OH，·OH是主要活性物种，且同时存在自由基路径和非自由基路径。［关键词］纳米零价铁镍；介孔材料；过硫酸盐；左氧氟沙星；降解机理［中图分类号］X703［文献标志码］A［文章编号］1006-1878（2023）01-0094-07［DOI］10.3969/j.issn.1006-1878.2023.01.014PersulfateactivatedbynZVI-Ni/MCM-41forlevofloxacindegradationLIChunqin，ZOUYachen，JIAXiaoning（SchoolofPetrochemicalEngineering，LanzhouUniversityofTechnology，Lanzhou730050，China）Abstract：Nanozero-valentiron-nickel（nZVI-Ni）bimetallicwasloadedonmesoporousmaterialMCM-41byliquidphasereductionmethodtopreparecompositecatalystnZVI-Ni/MCM-41.ThepreparedsampleswerecharacterizedandanalyzedviaTEM，XRDandXPS.Takinglevofloxacin（LOF）asthetargetpollutant，thedegradationeffectsofnZVI-Ni/MCM-41activatedpersulfate（PS）toLOFwerestudied.TheresultsshowthatundertheconditionsofLOFmassconcentration50mg/L，nZVI-Ni/MCM-41amount1.0g/L，PSamount0.10g/L，molarratioofirontonickel10∶1andpH=7.3，theLOFremovalratereaches93.14%.TheradicalquenchingexperimentresultsshowthatSO4-·and·OHexistsimultaneouslyinthereactionprocess，·OHisthemainactivespecies，andtherearebothfreeradicalandnon-radicalpathways.Keywords：nanozero-valentiron-nickel；mesoporousmaterial；persulfate；levofloxacin；degradationmechanism［收稿日期］2022-04-13；［修订日期］2022-06-30。［作者简介］李春琴（1996—），女，甘肃省定西市人，硕士生，电话13893209281，电邮1299594003@qq.com...
