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291Vol29No1中国稀土学报JOURNALOFTHECHINESERAREEARTHSOCIETY20112Feb2011:2010-11-12;:2010-11-30:(51079166),(08zc024),(09ZB063):(1975-),,,;:*(E-mai:lly112003@yahoo.com.cn)Ce3+刘咏*,邹文慧,廖洋,操飞,赵仕林(四川师范大学化学与材料科学学院,四川成都610066):Ce3+,Ce3+;Ce3+,,(Ce3+),COD,Ce3+;Ce3+;Ce3+H2O2OHCe3+Ce4+,:;;;:O643.3;X703:A:1000-4343(2011)01-0105-07[1],,,[2],,,4f[3],[4,5],,,[6],,[7],,,Ce3+,,1材料和方法1.11.1.11,PVC,500m,l,4cm,5cm,1.1.2722;DDS11A;WYK6010;pHS3C;DF101B;UV/Vis4802S;ICPAESoptima2100DV1.1.31Fig.1Schematicdiagramoftheexperimentalapparatus10629,,HPLC:1.21.2.120080mgL-1;5mmolL-1Ce3+1.2.21,300ml,NaOHH2SO4pH=3,Na2SO4,6mscm-1,,10min10m,lCOD,COD,1.31.3.1;pHpH;COD;1.3.2pH=30,2,4,6,8,10mgL-1,510nm,,y=0.01438+0.1014x,R=0.999pH=3,510nm,2结果与分析2.1Ce3+300ml200mgL-1,0mmo,l0.06mmolCe3+,8Adm-21.2.275min,10min,22,ln(c/c0)2ln(c/c0)tFig.2Curvesofln(c/c0)vs.tt,,Ce3+:Ct=C0exp(-kt)(1):Ct,C0t,,mgL-1;k,min-1;t,minln(c/c0)-tkCe3+Ce3+0.03939min-10.04547min-1k,Ce3+2.2300ml0.06mmolCe3+,,,33Fig.3Timecourseofceriumionconcentration1Ce3+1073,,,Ce3+Ce3+Ce4+,3Ce3+-e-=Ce4+,2.3Ce3+2.3.1Ce3+1,,3Adm-2200ml200mgL-11Ce3+1:(1),,,,OH,,OH,,,,,[8]H2O2,H2O2+e-OH+OH-(2),H2O2,,Ce3+O2,H2O2,Ce3+H2O2OH,[9](3)Ce3+,,Ce3+,,,,Ce3+OH,2.3.2Ce3+1,,2.3.1(0.6Adm-2)200ml200mgL-12,3Ce3+1Table1RemovalofmethylorangewithdifferentconditionElectrolyticconditionRemovalrate/%10min20min30min40min50minMS21.8436.1047.5958.8666.14MSandaddingTBA13.2130.9246.9254.2361.35MSandaddingCe3+25.7842.9754.3372.5981.65MSandaddingbothCe3+andTBA20.0136.6953.5869.3179.13AS25.6240.2857.4375.7584.46ASandaddingCe3+26.3146.6267.5078.3687.40ASandaddingbothCe3+andTBA20.5145.6260.4773.5581.86Note:MS-Magneticstirring;TBA-Tertbutylalcoho;lAS-Aerationstirring2Table2RemovalofmethylorangeintheanodechamberwithdifferentconditionElectrolyticconditionTheremovalrateintheanodechamber/%10min20min30min40min50minMembrane9.2330.4861.6890.2392.04MembraneandCe3+inthecathodechamber13.5947.8887.0194.9797.05MembraneandCe3+intheanodechamber9.0430.6161.9188.8693.04Note:Membrane-addingmembraneintheelectrolyticcel;lCe3+-addingCe3+108293Table3RemovalofmethylorangeinthecathodechamberwithdifferentconditionElectrolyticconditionTheremovalrateintheanodechamber/%10min20min30min40min50minMembrane15.3816.1017.1224.6925.46MembraneandCe3+inthecathodechamber23.9827.8728.4832.4737.23MembraneandCe3+intheanodechamber14.9214.8021.7422.5623.04Note:Membrane-addingmembraneintheelectrolyticcel;lCe3+-addingCe3+,,H2O2O2H2O,H+OH-,Na+,SO2-4,H+OH-,pH,,2,3,,,,,Ce3+Ce3+Ce3+,Ce3+,Ce3+2.4200mgL-1(COD212.8mgL-1)Ce3+Ce3+,15ml,COD,4,54,5,Ce3+,470~510nm,198,270310nm33*,470~510nmn*[10~12],470~510nm,60min30min,470~510nm,270,310nm;120min,470~510nm,270nm470~510nm1Ce3+109,,198nm4,5,Ce3+190~200nm,Ce3+4,5,,Ce3+510nmCe3+510nm30,60,120min56.17%,78.03%91.45%;Ce3+510nm30,60,120min70.25%,88.19%95.49%,Ce3+COD,30,60,120minCOD1903%33.61%,50.83%;Ce3+COD20.82%,39.84%5626%:,COD470~510nmn*,,CO2H2O,,COD[13],COD;Ce3+COD,Ce3+,Ce3+COD510nm,3讨论:,,pH3,,[14]Ce3+,Ce3+H2O2OH,Ce3+Ce4+,OH,[9],CO2,H2O,Ce4+Ce3+Ce3+COD,Ce3+COD510nmCe3+H2O2OH,425ml80mgL-1,2mmolL-1Ce4+,COD(Ce4+),464Ce4+Table4EffectofCe4+doseonthedegradationresultDoseofCe4+/ml00.51.01.57.5Absorbanceof510nm2.85580.48030.04270.03500.02983COD/(mgL-1)84.9782.8182.8082.8980.936Ce4+Fig.6UVvisspectralchangeofmethylorangewithdifferentCe4+dosage110294,6,Ce4+,,310270nm,510nm,Ce4+,[15]4,Ce4+COD,Ce4+,,Ce3+COD,Ce3+Ce3+H2O2OH;Ce3+H2O2Ce4+,Ce4+,4结论1.Ce3+,2.,Ce3+3.Ce3+,,Ce3+COD4.Ce3+Ce3+H2O2OHOH,;Ce3+H2O2Ce4+,Ce4+,:[1],.[M].:,2002.94.[2],.[J].,2003,16(2):43.[3],.[J].,2007,25(1):1.[4]KongJiangtao,ShiShaoyuan,KongLingca,iZhuXiuping,NiJinren.PreparationandcharacterizationofPbO2electrodesdopedwithdifferentrareearthoxides[J].ElectrochimicaActa,2007,53(4):2048.[5]CuiYuhong,FengYujie,LiuZhengqian.InfluenceofrareearthsdopingonthestructureandelectrocatalyticperformanceofTi/SbSnO2electrodes[J].ElectrochimicaActa,2009,54(21):4903.[6]WangH,WangJL.Electrochemicaldegradationof2,4dichlorophenolonapalladiummodifiedgasdiffusionelectrode[J].ElectrochimicaActa,2008,53(22):6402.[7],,,,.Cu()H2O2[J].,2007,33(3):22.[8],,,,,.H2O2Fenton[J].,2010,4(3):611.[9],,,.TiO2[J].,2009,41(10):229.[10],,,.[J].,2008,31(2):88.[11]WangChihT,HuJenLu,ChouWeiLung.RemovalofcolorfromrealdyeingwastewaterbyElectroFentontechnologyusingathreedimensionalgraphitecathode[J].JournalofHazardousMaterials,2008,152(2):601.[12]AnTaicheng,LiGuiying,ZhuXiha.iPhotoelectrocatalyticdegradationofoxalicacidinaqueousphasewithanovelthreedimensionalelectrodehollowquartztubephotoelectrocatalyticreactor[J].AppliedCatalysisA:Genera,l2005,279(1/2):247.[13],,.[J].,2010,30(4):516.[14],,,.Fe2+Fenton[J].,2006,29(12):1.[15],,.[J].(),2004,20(4):300.1Ce3+111TreatmentonMethylOrangeContainingSimulationWastewaterbyCe3+IonHomogenousElectroCatalyticDegradationProcessLiuYong*,ZouWenhu,iLiaoYang,CaoFe,iZhaoShilin(InstituteofChemistryandMaterialScience,SichuanNormalUniversity,Chengdu610066,China)Abstract:ExperimentofelectrocatalyticdegradationfortreatmentofwastewatercontainingmethylorangewascarriedoutwithCe3+ascatalys.tThekineticsofelectrocatalyticdegrada