TiO2纳米管阵列膜制备及用于光催化氧化深度处理造纸废水

372Vol.37No.220184PaperScienceandTechnologyApr.20181991。1963。[e-mail]*2015A0202150122016070100502015C05。TiO2*510640TiO2TANs。、TANsSEMXＲDTANs。－CODCr。TiO2、450℃2hTNAsPACTANsCODCr53．0%CODCr40mg/L。TNAsTNAs1500nm。TiO2－X793A1671-4571201802-0051-07．TiO2J．201837251-57．0、、1。、2。、、、3。nano-TiO2、、4。nano-TiO2nano-TiO256。TNAs、、、7。TNAs、8TNAs。TNAs。5237、、。TANs910。。Choi1300nm5。TANs1000～2000nmTANs。TNAs、TNAs。TANsTANsCODCr。11．1Ti99．7%HOCH2-CH2OHAＲ、NH4FAＲ、C2H5OHAＲ、HF、AＲ、HNO3AＲ、BＲhBAＲPACAＲSBＲ。1．21．2．1TNAs4mm×4mmHF/HNO3/H2O1∶4∶520s。、15min。30mm0．55%NH4F、。5℃/min450℃2h。1．2．2TNAs、。①1h、20wt%10～60V②50V、20wt%10～120min③50V、1h0%～30%。1．3FE-SEMLEO1530VP30kV。XXＲDBrukerD8ADVANCE40kV40mA2θ20°80°。1．4CODCrHachBOD5BODTOCTOCTOC-VCPHShimadzu2100NHach。1．5－1．5．1500mLpH50．25gPAC250r/min30min3h。1．5．2160mm×10mm16W254nm。TNAs20mLTNAs2cm10min1hCODCrCODCrη12TiO253η=C0－Ct/C0×100%ηCODCrC0CODCrmg/LCttCODCrmg/L。22．1TNAs2．1．1TNAs21h20%TNAs。10V。。60V。3。10～40V525nm1920nm50V1500nm。2TNAsA10VB20VC30VD40VE50VF60VTNAs①Ti4+Ti4+②F－H+TiF2－6③11。20%。3Antony12。10－40V。525nm1920nm。60V1500nm2－F。3TNAs2．1．2TNAs50V20%TNAsSEM4。20min20min120min980nm2160nm。90min113nm146nm90min。120min。20min90min、5。。54374TNAsA10minB20minC30minD60minE90minF120min5TNAs2．1．3TNAs650V1h0%～30%TANsSEM。0%。10%。20%、。30%。6TNAsA0%B10%C20%D30%TNAsTNAs。TNAs13。TNAsF－。F－60min。20%1～2μmTNAs。2．2XＲD7TNAsXＲDa450℃b7TNAs450℃XＲD0．55%NH4F、20%H2O50V1h。aTNAs2θ=25．210147°20054°10555°2012TiO255450℃。bTi。2．3－2．3．1SBＲ3hCODCr。CODCr278mg/L85mg/LCODCr69.42%。2．3．2TNAs120nmTNAsTNAs-1、TNAs-2、TNAs-3、TNAs-4。TNAs18。－9。1500nmTNAs-3－CODCr、BOD5、TOC2。1TNAsCODCrTNAs-1TNAs-2TNAs-3TNAs-4/nm9801175150019200CODCr/%33．1241．1852．9443．5310．598TWAsCODCr9－ABC2－CODCr/mg·L－1BOD5/mg·L－1TOC/mg·L－1/NTU2787017110．60585321100．6614018320．402/%52．9443．7570．9139．18/%85．6174．2981．2996．21TNAs。CODCrTNAs1500nmCODCr40mg/L。TNAs14。1920nmCODCr43．53%CODCr48mg/L。。10。1500nmBOD5、TOC、43．75%、70．91%、39．18%。1500nmMarien1．5μmChoi1．3μm813。563710TNAs31TNAsTNAs10～50V10～40V。。50V、20%TNAs20～90min。20%1～2μmTNAs。2TNAs1500nmCODCr53．0%CODCr40mg/L。BOD5、TOC43．75%、70．91%、39．18%。。TANs。1．J．201332555-61．2GOBASFAPCZHANGXWELLSＲ．GastrointestinalmagnificationthemechanismofbiomagnificationandfoodchainaccumulationoforganicchemicalsJ．EnvironmentalScience＆Technology199327132855-2863．3．J．201129155-57．4BETHIBSONAWANESHBHANVASEBAetal．NanomaterialsbasedadvancedoxidationprocessesforwastewatertreatmentAreviewJ．ChemicalEngineering＆ProcessingProcessIntensification2016109178-189．5CHOIWHONGSJYOONSEOKCHANGAetal．Photocatalyticdegradationofpolychlorinateddibenzo-p-dioxinsonTiO2FilmunderUVorsolarlightirradiationJ．EnvironmentalScience＆Technology200034224810-4815．6LiuZZhangXNishimotoSetal．HighlyorderedTiO2nanotubearrayswithcontrollablelengthforphotoelectrocatalyticdegradationofphenolJ．JournalofPhysicalChemistryC20081121253-259．7FＲANKAJKOPIDAKISNLAGEMAATJVD．ElectronsinnanostructuredTiO2solarcellstransportrecombinationandphotovoltaicpropertiesJ．CoordinationChemistryＲeviews2004248131165-1179．8．J．200765212363-2369．9LINCJYUYHCHENSYetal．AnodicgrowthofhighlyorderedtitaniumoxidenanotubearraysEffectsofcriticalanodizationfactorsontheirphotocatalyticactivityJ．WorldAcademyofScienceEngineering＆Technology2010381-241-48．10MAＲIENCBDCOTTINEAUTＲOBEＲTDetal．TiO2nanotubearraysInfluenceoftubelengthonthephotocatalyticdegradationofparaquatJ．AppliedCatalysisBEnvironmental20161941-6．11ZHUWLIUXLIUHetal．AnefficientapproachtocontrolthemorphologyandtheadhesionpropertiesofanodizedTiO2nanotubearraysforimprovedphotoconversionefficiencyJ．ElectrochimicaActa20115662618-2626．12ANTONYＲPMATHEWSTDASHSetal．X-rayphotoelectronspectroscopicstudiesofanodicallysynthesizedselfalignedTiO2nanotubearraysandtheeffectofelectrochemicalparametersontubemorphologyJ．MaterialsChemistry＆Physics20121322-3957-966．13YUDSONGYZHUXetal．MorphologicalevolutionofTiO2nanotubearrayswithlotus-root-shapednanostructureJ．AppliedSurfaceScience20132763711-716．14．J．2012243454-458．PreparationofTiO2NanotubeArraysandAdvancedTreatmentofPapermakingWastewaterbyPhotocatalyticOxidationSONGShu-fangCHENXiao-quan*PENGXiang-yangSHENWen-haoStateKeyLaboratoryofPulpandPaperEngineeringSouthChinaUniversityofTechnologyGuangzhou510640ChinaAbstractHighlyorderedTiO2nanotubearraysTNAswerefabricatedviatheelectrochemicalanodicoxidationprocess．Theeffectsof2TiO257appliedanodizationpotentialanodizationtimeandelectrolytewatercontentonthemicrostructureofnanotubeswereinvestigatedwithSEM．ThecrystallinephasewascharacterizedwithXＲD．ThepapermakingwastewaterwastreatedthroughphotocatalyticoxidationprocessinwhichtheTNAswereusedasthephotocalystandthewastewaterwentthroughthepretreatmentbytheflocculationofpolyaluminiumchloridePAC．Theeffectofthelengthoftitaniumnanotubeonthephotocatalyticdegradationwasevaluated．Theresultsshowedboththetubediameterandthetubelengthhadalinearrelationwithanodizationvoltageandanodizationtimewithinacertainrange．TNAscalcinedat450℃for2hwaspureanatasephase．ThehighestremovalrateofCODCrafterphotocatalyticreactionreached52．94%whenthenanotubelengthwas1500nmandtheCODCrwasreducedto40mg/L．Ontheotherhandthestud