Structural and Magnetic Analyses of Magnetic Nanoparticles Coated with Oleate Molecules-中国Betway体育网页登陆

摘要 Physicalandchemicalpropertiesofthemagneticnanoparticlescoatedwitholeatehavebeeninvestigatedbymeansoftransmissionelectronmicroscopy(TEM),thermogravimetricanalysis(TGA),Mossbauerspectroscopy,superconductingquantuminterferencedevice(SQUID)magnetometry,infraredspectra(IR)andthecontactangledevice.TheresultsshowthatdopedAlionsinFe3O4nanoparticlesarelocatedontheoctahedralsitesofthespinelstructure.Oleateiscoatedonthemagneticnanoparticleswithtwolayersbychemicalabsorbing,theouterlayercanbewashedaway.Thewettingofthesurfaceofmagneticnanoparticlescoatedwithmonolayerhasbeenchangedfromhydrophilicitytohydrophobicity,andthenanoparticlescanbedispersedverywellinsomeorganicsolutions.

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Structural and Magnetic Analyses of Magnetic Nanoparticles Coated with Oleate Molecules

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