化学共沉淀法制备纳米四氧化三铁粒子

29120073()JournalofHubeiUniversity(NaturalScience)Vol.29No.1Mar.,2007:20060622:(1981),,:10002375(2007)01005003,,(,430062):,X,,.:;;:TM227,O611.4:A,.[15].,,[6],[7],[8],[9],r-ray[10],[11],.Fe3O4,.11.1FeCl36H2O(AR);FeSO47H2O(AR);NH3H2O(AR);SK2200H,20kHz,90W;D/MAX2CX(XRD);TEX2100SX(TEM).1.2(FeSO47H2O)(FeCl36H2O),(NH3H2O),,Fe3O4,:Fe2++2Fe3++8NH3H2O=Fe3O4+8NH+4+4H2O,Fe2+Fe3+=12,,.1.3(FeSO47H2O)(FeCl36H2O),NH3H2O,,pH10,,.30min,,,60,Fe3O4.2Fe3O42.1XRD1Fe3O4,2=30,35,42,62.5,Fe3O4(220),(311),(400),(440).Scherrer:D=/cos.,,D,,.,0.89.235Fe3O48.8nm.2.2TEM2Fe3O4.Fe3O4,,1020nm.TEMXRD,Scherrer1:51Fe3O4,TEMFe3O4.1Fe3O4XRD2Fe3O4TEM33.1Fe2+Fe3+40,11,CFe2+=CFe3+,NH3H2O1mol/L,,Fe3O4,1.1Fe2+Fe3+Fe3O4/(molL-1)/nma0.2522.1b0.1515.5c0.1258.81,,,Fe2+Fe3+,,[8].,,.,,.3.240,11,0.25mol/L(CFe2+=CFe3+),,Fe3O4,2.2NH3H2OFe3O4/(molL-1)/nma1.523.8b1.022.0c0.515.52,,.,NH3H2O,.3.340,11,CFe2+=CFe3+,,,Fe3O4,3.52()283Fe3O4/(molL-1)/(molL-1)/nma0.251.523.8a30.251.517.2b0.251.022.1b30.251.09.433,,Fe3O4.(1),,;(2)Fe3O4,.4Fe3O4,.,.,10nmFe3O4.:[1]YamguchiK,MatsumotoK,FijiT.Magneticanisotropybyferromagneticparticlesalignmentinamagneticfield[J].JApplPhys,1990,67:44934495.[2]OdenbachS.Magneticfluids[J].AdvColloidInterfaceSci,1993,46:263282.[3]AtarshiT,ImaiT.Onthepreparationofthecoloredwater2basedmagneticfluidscred,yellowblueandblack[J],MagnMagnMater,1990,85:36.[4]CaceresPG,BehbehaniMH.Microstructuralandsurfaceareadevelopmentduringhydrogenreductionofmagnetite[J],ApplCatalA,1994,109:211223.[5]ChikovV,KuznetsovA.Singlecellmagnetophoresisanditsdiagnosticvalue[J],JMagnMagnMater,1993,122:367370.[6]FanR,ChenXH,GuiZ,etal.AnewsimplehydrothermalprepationofnanocrystallinemagnetiteFe3O4[J].MaterialsResearchBulletin,2001,36:497502.[7],.Fe3O4[J].,1998,13:619624.[8],,,.[J]..2003,17:6668.[9]ZhuYihua,WuQiufang.Synthesisofmagnetitenanoparticlesbyprecipitationwithforledmixing[J].JournalofNanoparticleResearch,1999,1:393396.[10]WangShizhong.XinHouwen,QianYitai.PreparationofnanocrystallineFe3O4by2rayradition[J].MaterialsLetters,1997,33:113116.[11]KhollamYB,DhageSR,PotdarSB,etal.Microwavehydrothermalpreparationofsubmicron2sizedsphericalmagnetite(Fe3O4)powders[J].MaterialsLetters,2002,56:571577.Fe3O4nanoparticlespreparedbychemicalco2precipitationmethodHUANGJing2jing,XUZu2shun,YIChang2feng(SchoolofMaterialsScienceandEngineering,HubeiUniversity,Wuhan430062,China)Abstract:Fe3O4nanoparticleswerepreparedbychemicalco2precipitationmethod.ThepropertiesofFe3O4nanoparticleswerecharacterizedbyX2raydiffraction(XRD)andtransmissionelectronmicroscopy(TEM).TheeffectsoftheconcentrationofFe2+,Fe3+,NH3H2OandtheultrasonicontheaveragediameteroftheFe3O4nanoparticlesarestudied.Keywords:chemicalco2precipitationmethod;Fe3O4;ultrasonic()