Bulletin of the Chemical Society of Japan · 2004 · 11 citations · 29 references
Natural SciencesChemistryMaterials ScienceInorganic ChemistryMaterials ChemistryNanomaterialsCrystal ChemistryFerromagnetismInorganic NanoparticlesMagnetic OxidesMagnetism Of Inorganic CompoundsSurface PhysicsEmission SpectraEmission Spectra AnalysisNanocrystalsPhotochemical FunctionalizationPhysical PropertiesZeolite NanocrystalsZeolite SynthesisZeolites
Abstract The cation-exchange of zeolite X with divalent europium has been achieved using a methanol solution containing Eu(II) prepared by photochemical reduction of Eu(III). Emission spectra have confirmed that the valence of europium ion in the ion-exchanged zeolite X was divalent. A blue shift of emission spectra was observed after exposing Eu(II)X to air at room temperature. TEM have revealed the formation of EuO nanocrystals with average size of 4.2 nm on the outer surface of Eu(II)X. EuO nanocrystals show ferromagnetism accompanied by photo-response magnetism under UV irradiation.
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