光催化复合膜制备及其性能研究高亚男

28220094JOURNALOFTIANJINPOLYTECHNICUNIVERSITYVol.28No.2April20091，2，1，2，1，2（1.，300160；2.，300160）：，-TiO2，-.XRDTiO2，100mg/L.，，，.：；-；TiO2；；：TQ028.8；TS102.528.1：A：1671－024X（2009）02－0017－04PreparationandevaluationofphotocatalyticmembraneGAOYa-nan1，2，LIJian-xin1，2，HEBen-qiao1，2（1.KeyLaboratoryofHollowFiberMembraneMaterialsandMembraneProcessesofMinistryofEducation，TianjinPolytechnicUniversity，Tianjin300160，China；2.SchoolofMaterialScienceandChemicalEngineering，TianjinPolytechnicUniversity，Tianjin300160，China）Abstract：Aphotocatalyticmembranewithantifoulingwasmadebythecombinationofphotocatalytictechnologyandmembraneseparation.TiO2solwaspreparedbythesol-geltechnique.TheTiO2solwascoatedonaninorganicceramicmembranebymeansofdipping-raisemethodtomakeaphotocatalyticcompositemembrane.ThecrystalstructureandthecrystalsizeofTiO2werecharacterizedbyXRD.100mg/Loilywastewaterasthefeedwasusedtoevaluatethemembraneperformance.Theresultsshowthatthepurewaterfluxofphotocatalyticcompositemembraneislowerthanthatoftheoriginalceramicmembrane.However，thefluxandtherejectionofthecompositemembranearehigherthanthatoftheoriginalmembraneduringthefiltrationwiththeoilywastewater.Inaword，theceramicmembranecoatingwithphotocatalystcanimproveitsperformance.Keywords：compositemembrane；sol-geltechnique；TiO2photocatalysis；oilywastewater；membranefouling：2008-10-30：（1986—），，；（1966—），，，，.E-mail：[e-mail]：（NCET-06-0250）[1-5]..10..TiO2TiO2、.TiO2.-TiO2、.SitkiewitzTiO2[6].-TiO2[7]/、.-28TiO2[8]、TiO2.ZhangAl2O3[9]-TiO2/Al2O3..11.1Al2O30.5μm.KQ3200EKSW-5-12D8GADDSXBrukerUV2450SHIMADZUQUANTA200FEI2XZ-285-2DH-101-0.1.21.、、、、、0.5μm、23.22cm、12.17mmPVC8mm..1.31.3.10.5g∶=10∶10.05g5L30min100mg/L.1.3.2TiO2/-TiO2/29.61mL120mLA60.01mL4.98mL9.02mLBBA2h.1min100℃10min450℃1hTiO2/.1.3.3.100mg/L.6h.100mg/L..20±1kPa25±1℃360min.UV2450SHIMADZU.1.41XRDSEM.BrukerD8GADDSXCuKα40kV40mAλ0.1542nm.2.S=πd.d.J=V/S·t1Vt.18——2R=1-C1/C0×100%2C0C1.22.1TiO22.1.1X-XRD1.3.2TiO2450℃1hTiO2.X2.2TiO2TiO22θ=25.15°.TiO2450℃TiO2.ScherrerD=0.89λ/βcosθβXRDλXθTiO211.46nm.2.1.2SEM3TiO2SEM.3TiO270μm.2.22.2.1TiO2354.9L/m2·h227.6L/m2·hTiO2TiO2.TiO2.4TiO2TiO2.460min.4....TiO2·OH.·OH[10-11]..TiO2.4Fig.4Membranefluxversusoperatingtimeduringoilywastewatertreatment2TiO2XRDFig.2XRDpatternofTiO23TiO2SEMFig.3SEMmicrographofcross-sectionofmembranewithTiO2film1.21.00.80.60.40.20/CPS232θ/°273135394347515525.15°4003503002502001501005000/min60120180240300360420/L·m-2·h-1，：19——282.2.21100mg/LTiO239.2%TiO260.8%..TiO2.2.2.35TiO2SEM.5..31450℃TiO21hTiO2.2..[1]SIMMSKMLIUTHZAIDISA.RecentadvancesintheapplicationmembranetechnologytothetreatmentofproducedwaterinCanada[J].WaterTreatment199510135-144.[2]BILSTADTESPEDALE.Membraneseparationofproducedwater[J].WaterScienceTechnology1996349239-246.[3]KARAKULSKIKKOZLOWSKIAMOMWSKIAW.Purifi－cationofoilwaterbyultrafiltration[J].SeparationsTechnolo－gy19955197-205.[4]TAOFTCURTICES.Reverseosmosissuccessfullyconvertsoilfieldbrineintofreshwater[J].OilandGasJournal1993988-91.[5]MULDERM.BasicPrinciplesofMembraneTechnology[M].DordrechtKluwerAcademicPublishers1996.[6]SITKIEWTZSHELLERA.Photocatalyticoxidationofben－zeneandstearicacidonsol-gelderivedTiO2thinfilmsat－tachedtoglass[J].NewJChem199620233-241.[7].TiO2[J].2006291106-109.[8].TiO2/[J].200318139-42.[9]HAIMINZXIEQSHUOCetal.Fabricationofphoto－catalyticmembraneandevaluationitsefficiencyinremovaloforganicpollutantsfromwater[J].SeparationandPurificationTechnology200650147-155.[10]ZHANPENGJHAIYANWHEHetal.PhotocatalysisenhancementbyelectricfieldTiO2thinfilmfordegradationofdyeX-3B[J].Chemosphere200456503-508.[11]LIVRAGHISVOTTAAPAGANINIMCetal.ThenatureofpapamagneticspeciesinnitrogendopedTiO2activeinvisiblelightphotocalysis[J].ChemCommmun20054498-500.a5TiO2SEMFig.5SEMmicrographsofcompositemembranesurfaceswithTiO2b20——