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dc.contributor.authorSCHMITT, WOLFGANG
dc.date.accessioned2014-04-08T09:58:05Z
dc.date.available2014-04-08T09:58:05Z
dc.date.issued2010
dc.date.submitted2010en
dc.identifier.citationOkuda M, Takeguchi M, Ruairc OO, Tagaya M, Zhu Y, Hashimoto A, Hanagata N, Schmitt W, Ikoma T, Structural analysis of hydroxyapatite coating on magnetite nanoparticles using energy filter imaging and electron tomography., Journal of electron microscopy, 59, 2, 2010, 173-9en
dc.identifier.otherY
dc.identifier.urihttp://hdl.handle.net/2262/68428
dc.descriptionPUBLISHEDen
dc.description.abstractMagnetic nanoparticle (MNP) composites with a magnetite (Fe 3O4) core and a hydroxyapatite (HAp, Ca 10(PO4)6(OH)2) coating were prepared using a precipitation method and a subsequent hydrothermal treatment. The hydrothermal treatment diminished the lepidocrocite layer on the magnetite, enhanced the crystal growth of HAp and dissolved the MNPs. The divalent iron ions dissolved into solvent were not substituted for the HAp lattice. The three-dimensional (3D) nanostructure, the crystal morphology of HAp covered with the MNPs and the interfacial nanostructure of magnetite/HAp were analyzed using an energy-filter transmission electron microscopy (EF-TEM) and visualized by computer tomography in transmission electron microscopy (TEM). EF-TEM and 3D reconstruction images using a tilted series of high-angle annular dark-field images showed that the needlelike HAp nanocrystals covered with a magnetite core and the crystal growth of HAp attached to the magnetite surface was inhibited as a result of the lower density of the nucleation site of the lepidocrocite layer. The dissolution of iron ion from MNPs and the interfacial interaction of HAp and magnetite could cause the needlelike morphology of HAp nanocrystals.en
dc.format.extent173-9en
dc.language.isoenen
dc.relation.ispartofseriesJournal of electron microscopy;
dc.relation.ispartofseries59;
dc.relation.ispartofseries2;
dc.rightsYen
dc.subjectChemistryen
dc.titleStructural analysis of hydroxyapatite coating on magnetite nanoparticles using energy filter imaging and electron tomography.en
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/schmittw
dc.identifier.rssinternalid69925
dc.rights.ecaccessrightsOpenAccess


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