纳米铁酸钴的合成及其在水处理中的应用

91320097167121819(2009)1323928204ScienceTechnologyandEngineeringVol19No113July2009Z2009Sci1Tech1Engng1(,152061)F2127,CoCl26H2OFe(NO3)39H2O,-,450500600XRDTG,,XRD,,Cr(VI),,2X703;B2009323(K081006)(CX2008002)(SJ08004):(1980),,,,,:E2mail:[e-mail](III),,,,,:[1,2][3],,,[49],CoFe2O4,:(-),,,F2127,,-,Cr(VI)[1012]Cr6+,USEPA,Cr(VI),Cr(VI)[13],CoFe2O4Cr(VI)11.1Fe(NO3)39H2OCoCl26H2ONH3H2O,F127(EO106PO70EO106,MW=12600,ProductNo.P2443250G)RigakuTAS10078HW1SX224210CuKX(RigakuD/maxIIIB(40kV,30mA))PerkinElmer(USA)ST2000(ThermoElementalSOLAAR-M=357.9nm)1.21.0gF212720mL,35,4.5mL,75,4.1gFe(NO3)39H2O1.4gCoCl26H2O20mL,,,,22.1CoFe2O4XRD1CoFe2O4XRDCoFe2O4(JCPDSNo.221086),Fe2O3,,CoFe2O4(Fd3m)1:,,,CoFe2O41CoFe2O4XRD(A)450;(B)500;(C)600oC.(CoFe2O4,l-Fe2O3)Scherrer:D=K/(c-s)cos(,D,cs),1,,-()CoFe2O42.2CoFe2O4TEM2600CoFe2O4TEM,32nm,ScherrerCoFe2O4,CoFe2O4,,,CoFe2O4,,2600CoFe2O4TEM2.3CoFe2O43450CoFe2O4(),553cm-1,Fe2O,Fe2O3Fe2O(537cm-1)[10]XRD,CoFe2O43450CoFe2O4929313,:2.4TGTGRigakuTAS100(10min-1),4CoFe2O4,3080,9%,80180,7%,180450,53%,CO2450,,450,CoFe2O4,XRD4TG(10)1CoFe2O4CoFe2O4SBET/m2g-1/nmCr(VI)/mggCat.-145060.520.33.8350057.124.53.4560049.630.93.142.5ST22000CoFe2O4(BET),1,450600,20.3nm30.9nm,CoFe2O460.5m2g-149.6m2g-1F2127,Fe(NO3)39H2OCoCl26H2O,CoFe2O4,,2.6K2Cr2O7Cr6+,0.05g25mLCr6+,203h,10.8mg/L,(ThermoElementalSOLAAR2M=357.9nm)Cr(VI),1,,(Cr6+),[14],Cr6+3-CoFe2O4,,,,,-,,,,,CoFe2O4,,,,,(Cr6+),4501BateG.Magneticrecordingmaterialssince1975.JMagnMagnMater,1991;100(3):4134242SugimotoM.Thepast,present,andfutureofferrites.JAmCeramSoc,1999;82(2):2692803Valds2SolsT,Valle2VignP,FuertesAB,etal.ManganeseferritenanoparticlessynthesizedthroughananocastingrouteasahighlyactiveFentoncatalyst.CatalysisCommunications,2007;8(12):203720424Leisle2PeleckyDL,RiekeRD.Magneticpropertiesofnanostructuredmaterials.ChemMater,1996;8(8):177017835CarpenterEE,OpConnorCJ,HarrisVG.Atomicstructureandmag2neticpropertiesofMnFe2O4nanoparticlesproducedbyreversemicelle03939synthesis.JApplPhys,1999;85(8):517551776PankhurstQA,ConnollyJ,JonesSK,etal.Applicationsofmagneticnanoparticlesinbiomedicine.JPhysD:ApplPhys,2003;36:1671817TartajP,MoralesM,Venitemillas2VerdaguerS,etal.Thepreparationofmagneticnanoparticlesforapplicationsinbiomedicine.JPhysD:ApplPhys,2003;36:1821978VestalCR,ZhangZJ.Magneticspinelferritenanoparticlesfrommi2croemulsions.IntJNanotechnol,2004;1:2402639KumarRV,DiamantY,GedankenA.Sonochemicalsynthesisandcharacterizationofnanometer2sizetransitionmetaloxidesfrommetalacetates.ChemMater,2000;12(8):2301230510AjmalM,RaoRAK,AhmadR,etal.RemovalandrecoveryofheavymetalsfromelectroplatingwastewaterbyusingKyaniteasanadsorbent.JHazardMater,2001;87(3):12713711SelvarajK,ManonmaniS,PattabhiS.Removalofhexavalentchromi2umusingdistillerysludge.BioresourceTechnol,2003;89(2):20721112BrownPA,GillSA,AllenSJ.Metalremovalfromwastewaterusingpeat.WaterResearch,2000;34(16):3907391613HuJ,LoIMC,ChenGH.ComparativestudyofvariousmagneticnanoparticlesforCr(VI)removal.SeparationandPurificationTech2nology,2007;56:24925614WaychunasGA,KimCS,BanfieldJF,Nanoparticulateironoxidemineralsinsoilsandsediments:uniquepropertiesandcontaminantscavengingmechanisms.JNanoparticleRes.2005;7:409433SynthesisofCobaltFerriteNanoparticlesandTheirApplicationinWaterTreatmentTIANXi2qiang,DONGYan2ping,ZHAODong2jiang,MASong2yan(DepartmentofChemistryandMedicalEngineering,SuihuaUniversity,Suihua152061,P.R.China)[Abstract]TheSolofCobaltferriteispreparedbyusingSol2Gelmethod,utilizingCoCl26H2OandFe(NO3)39H2Oastheinorganicsourcesandtriblockcopolymerassurfactant.NanocrystallineCoFe2O4canbeobtainedat450,500,600.TheNano2CoFe2O4samplewascharacterizedbyPowderX2raydiffraction(XRD),Infraredspectra(IR),thermalgravimetric(TG),BET.PowderX2raydiffractioncharacterizationshowsthatX2raydiffractionpeaksisenhancedwiththeincreasingofcalcinedtemperature,whichindicatethecrystallineimproved.However,theBETsurfaceareaisdecreasingwiththeincreasingtemperature.Herein,weutilizedCoFe2O4powderscalcinedatdifferenttemperaturestoinvestigatetheirapplicationsinwater(containingCr(VI)ions)treatment.ItwasfoundthattheremovalabilityofpreparedCoFe2O4isincreasingwiththedecreasingofcalcinedtemperature.[Keywords]nanomaterialsol2gelmethodcobaltferritewatertreatment(3927)Eco2efficiencyResearchofFlowingProductionBasedonEnvironmentalValueChainWANGYue,KONGLing2cheng(SchoolofBusiness,EastChinaUniversityofScienceandTechnology,Shanghai200237,P.R.China)[Abstract]Byusingthetheoryofenvironmentalvaluechain,theperformanceofresourcessaverandenvironmentfriendlyinflowingproductionareanalyzed,andsetupacycle2reusingnetworkmodeloftheoffalsupplychain.Afterquantitativeanalyzingtheeco2efficiencyofdifferentwaysofdisposaltheoffal,ajudgingcriterionofwaysofoffaldisposalissummarized.Attheend,adataexampleofGuitangGroupprovesthefeasibilityofthismethod.There2sultsshowtheobviouseco2efficiencyofthegroupbyextendingtheindustrychainwhendealingwiththeoffal.[Keywords]flowingproductionenvironmentalvaluechaineco2efficiencycycle2reusing139313,: