FeCu铁内电解处理甲基橙的谱学表征

34520155ENVIＲONMENTALCHEMISTＲYVol．34No．5May2015201492．*2012H60082013-G-92．＊＊[e-mail]10．7524/j．issn．0254-6108．2015．05．2014090205．Fe-CuJ．2015345977-982YULajiaSUNLanLAIZhuzhietal．SpectroscopiccharacterizationofmethylorangedegradedbyFe-CuironinternalelectrolysisJ．EnvironmentalChemistry2015345977-982Fe-Cu*1＊＊1111121．3610052．361005-UV-VIS、MSEPＲFe-Cu．pH=3Fe-Cu1∶1Fe-Cu-Mn1∶1∶0．05400—600nmUV-VISFe-Cu-Mn1∶1∶0．05350—550nm．MS．EPＲFe3+、Fe2+Fe-Cu-Mn1∶1∶0．05Mn2+6．Fe-Cu、．．SpectroscopiccharacterizationofmethylorangedegradedbyFe-CuironinternalelectrolysisYULajia1＊＊SUNLan1LAIZhuzhi1CHENYunqing1CHENHongbo1LINChangjian121．CollegeofChemistryandChemicalEngineeringXiamenUniversityXiamen361005China2．StateKeyLaboratoryofPhysicalChemistryofSolidSurfacesXiamenUniversityXiamen361005ChinaAbstractThechangeofmethylorangeinFe-CuironinternalelectrolyzerwasexaminedbyUV-ViSMSandEPＲ．TheresultsshowedthatUV-ViSabsorptionpeakintherangeof400—600nmdecreasedwiththeincreaseofthereactiontimeinFe-Cumassratio1∶1andFe-Cu-Mnmassratio1∶1∶0．05ironinternalelectrolyzerwhenthesolutionpHwas3．PositiveandnegativeionmodeMSdisplayedthatthequasi-molecularorionpeaksofmethylorangegraduallydecreasedbutthefragmentsproducedbythedegradationofmethylorangeweredetected．EPＲsignalsassignedtoFe2+andFe3+increasedslightlyandthesixfinepeaksassignedtoMn2+changedfromweaktostrongsignal．Theseresultsindicatedthatoneofthedegradationroutesofmethylorangeisthattheazodoublebondwasdestroyedbyoxidation-reductionreactioninFe-Cuironinternalelectrolyzerwhichresultsinthedecolorationofmethylorange．Anotherroutewasthatinweakelectricfieldmethylorangewasbrokendowntosmallerfragmentswithlesserm/z．Itishelpfultoexploretheefficiencyofcatalyticdegradationandthedegradationmechanisminthedecolorationofmethyl97834orangeinironinternalelectrolyzer．Keywordsmethylorangeironinternalelectrolysischaracterizationcatalyticdecomposition．、．、、1-4．-207080．、．21．、、5-10．、．CODCr．-UV-VIS、MSEPＲFe-CuFe、Mn．11．1PHS－25pHUV－2100ThermofisherFinniganLCQBＲUKEＲEMX－10/12．MnO2CuSO4CP．1．20．02mol·L－1NaOH0．01mol·L－131．0．01mol·L－131．20mg1L20mg·L－11mol·L－1HClpH=3．2g2g100mLFe-Cu1∶12g、2g0．1gMnO2100mLFe-Cu-Mn1∶1∶0．05．1．31．3．1UV-VIS250mLFe-Cu1∶1Fe-Cu-Mn1∶1∶0．052、10、20、30、40、90min1．5mLUV-VIS200—700nm．1．3．2MS250mLFe-Cu1∶1Fe-Cu-Mn1∶1∶0．052、10、30min1mLMSFe-Cu．ESI、220℃8L·min－1．5Fe-Cu9791．3．3EPＲ250mlFe-Cu1∶1Fe-Cu-Mn1∶1∶0．052、10、30min10μLΦ1mmEPＲ．X100kHz0．2mT20mW．22．1Fe-CuUV-VIS1abFe-Cu1∶1Fe-Cu-Mn1∶1∶0．05UV-VIS．1a0minUV-VIS．1Fe-Cu1∶1aFe-Cu-Mn1∶1∶0．05bUV-VISFig．1TheUV-VISspectraofmethylorangesolutioninFe-Cumassratio1∶1aandFe-Cu-Mnmassratio1∶1∶0．05bironinternalelectrolysisafterdifferentreactiontime1a400—600nm400—600nm90min．．1b1aFe-Cu-Mn1∶1∶0．05350—550mm460nm．250nm．Fe-Cu-Mn1∶1∶0．05Fe-Cu1∶12．2．2Fe-CuMS2pH=3、MS．3Fe-Cu1∶1Fe-Cu-Mn1∶1∶0．05MS．1Fe-Cu1∶1Fe-Cu-Mn1∶1∶0．05/MS．1MSC14H14N3SO3NaM=327M+H+m/z=328H+Na+m/z=306MSH+Na+m/z=304．980342MSFig．2TheMSspectraofthemethylorangesolution3Fe-Cu1∶1aFe-Cu-Mn1∶1∶0．05bMSFig．3TheMSspectraofthemethylorangesolutioninFe-Cumassratio1∶1aandFe-Cu-Mnmassratio1∶1∶0．05bironinternalelectrolysisinpositiveionmode1Fe-Cu1∶1Fe-Cu-Mn1∶1∶0．05/MSTable1TheMSdetectionresultinpositive/negativeionmodeofthemethylorangesolutionandthemethylorangesolutioninFe-Cumassratio1∶1inFe-Cu-Mnmassratio1∶1∶0．05ironinternalelectrolysisafterdifferentreactiontimem/zM-Na+2H+M+H+M-Na+H+K+M-Na－3061003283034410304100Fe-Cu2min10min30minM-Na+2H+C6H5SO3HNa+3061002742018110306902741001812030660274100181302min10min30minM-Na－2H2SO3－H－304100197501632030410019790163303044019710016380Fe-Cu-Mn2min10min30minM-Na+2H+C6H5SO3HNa+—CHCH—n3061002744018120306602741001813030620274100181401135073402min10min30minM-Na－2H2SO3－H－30410019790163703048019710016390304101971001631005Fe-Cu981pH=3C14H14N3SO3H305．Fe-Cu1∶1m/z306m/z274181m/z306Fe-Cu1∶1m/z274m/z181．Fe-Cu-Mn1∶1∶0．05m/z306m/z274181Fe-Cu1∶1m/z11373．MSFe-Cu1∶1Fe-Cu-Mn1∶1∶0．05m/z304．帨帨師師師師SO3HNa+m/z181Fe-Cu-Mn1∶1∶0．05—CHCH—CHCH—、．．Fe-Cu1∶1Fe-Cu-Mn1∶1∶0．05MnO2．2．3EPＲEPＲFe-Cu1∶1Fe-Cu-Mn1∶1∶0．052Fe、Mn．4Fe-Cu1∶1Fe-Cu-Mn1∶1∶0．05EPＲ．4Fe-Cu1∶1aFe-Cu-Mn1∶1∶0．05bEPＲFig．4TheEPＲspectraofthemethylorangesolutioninFe-Cumassratio1∶1aandFe-Cu-Mnmassratio1∶1∶0．05bironinternalelectrolysisFe-Cu1∶1EPＲg=4．32g=2．01Fe3+11－13g=3．43、2．322．65Fe2+11-12Fe3+．pH=3、、14．4bFe3+Fe2+Fe-Cu1∶198234Fe-Cu-Mn1∶1∶0．05Fe2+Fe3Fe2+10ming=2．06EPＲMn2+EPＲ1530minEPＲ．1UV-VISFe-Cu-Mn1∶1∶0．05Fe-Cu1∶1MnO2Mn4+MnO2Mn4+Mn2+EoMnO2//Mn2+=1.23V、EoFe3+/Fe2+=0．771VEoFe2+/Fe=－0．44VMnO2/Mn2+Fe3+/Fe2+Fe2+/Fe1．6VMnO2MnO2．MnO29．31、Fe-Cu1∶1Fe-Cu-Mn1∶1∶0．05UV-VISFe-Cu1∶1Fe-Cu-Mn1∶1∶0．05Fe-Cu-Mn1∶1∶0．05Fe-Cu1∶1．2Fe-Cu1∶1Fe-Cu-Mn1∶1∶0．05、MS帨帨師師師師SO3HNa+m/z181Fe-Cu-Mn1∶1∶0．05—CHCH—CHCH—Fe-Cu1∶1Fe-Cu-Mn1∶1∶0．05．3EPＲFeFe2+Fe3+．Fe-Cu-Mn1∶1∶0．05EPＲMn2+Mn．4．1．—J．20131485-882．CitrobacterSPLW-3J．20143492213-22183SarataleＲGSarataleGDChangJSetal．BacterialdecolorizationanddegradationofazodyesAreviewJ．JournaloftheTaiwanInstituteofChemicalEngineers201142138-1574GhodakeGSTelkeAAJadhavJPetal．PotentialofbrssicajunceainordertotreattextileeffluentcontaminatedsitesJ．InternationalJourna