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dc.contributor.authorSilva, F. B. F.-
dc.contributor.authorParis, Elaine Cristina-
dc.contributor.authorCosta, Geraldo Magela da-
dc.contributor.authorRibeiro, C.-
dc.identifier.citationSILVA, F. B. F. et al. Insight into magnetite nanoparticle phase evolution in solvothermal synthesis through a simple method based on iron chloride and metallic iron. RSC Advances: an international journal to further the chemical sciences, v. 4, p. 53265-53272, 2014. Disponível em: <>. Acesso em: 02 fev. 2015.pt_BR
dc.description.abstractThis paper presents the development and optimization of the synthesis of magnetic nanoparticles composed of iron oxides by a solvothermal method with benzyl alcohol using iron(III) chloride hexahydrate as a metallic precursor in the substitution of iron(III) acetylacetonate. The synthesis parameters were studied and varied to obtain a high yield of magnetite. Metallic iron was evaluated as a reducing agent and iron source. Furthermore, the use of urea as a precipitation agent was crucial to increasing the yield of magnetite, at once reducing the acidity of the medium and inducing the precipitation of Fe2+ ions. Longer treatment times and no stirring led to an increase in the yield of magnetite, whose formation process followed the Ostwald step rule. The particles were characterized by X-ray diffraction, M¨ossbauer spectroscopy, FTIR, TEM, SEM-FEG and VSM (Vibrating Sample Magnetometry). The phases were quantified by the Rietveld method and M¨ossbauer spectroscopy, and a 97% maximum yield of magnetite was achieved. The polymerization of benzyl alcohol during the solvothermal treatment was shown to play an important role in the nanoparticle capping. The polymerized resin was characterized by FTIR and NMR-1H, and a mechanism for the polymerization reaction was proposed to elucidate the synthetic route and its relationship to particle formation and stability.pt_BR
dc.titleInsight into magnetite nanoparticle phase evolution in solvothermal synthesis through a simple method based on iron chloride and metallic iron.pt_BR
dc.typeArtigo publicado em periodicopt_BR
dc.rights.licenseO periódico RSC Advances concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3581980991838.pt_BR
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