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Synthesis and characterization of Fe3O4 nanoparticles coated with fucan polysaccharides

Silva, V.A.J. ; Andrade, P.L. ; Silva, M.P.C. ; Bustamante D., A. ; De Los Santos Valladares, Luis ; Albino Aguiar, J.

Journal of magnetism and magnetic materials, 2013-10, Vol.343, p.138-143 [Periódico revisado por pares]

Amsterdam: Elsevier B.V

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Título:
Synthesis and characterization of Fe3O4 nanoparticles coated with fucan polysaccharides
Autor: Silva, V.A.J. ; Andrade, P.L. ; Silva, M.P.C. ; Bustamante D., A. ; De Los Santos Valladares, Luis ; Albino Aguiar, J.
Assuntos: Agglomeration ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Coprecipitation ; Diamagnetism, paramagnetism and superparamagnetism ; Exact sciences and technology ; Fucan ; Magnetic nanoparticle ; Magnetic properties ; Magnetic properties and materials ; Magnetic properties of nanostructures ; Magnetic resonances and relaxations in condensed matter, mössbauer effect ; Magnetite ; Magnetization ; Mossbauer spectroscopy ; Mössbauer effect; other γ-ray spectroscopy ; Nanoparticles ; Physics ; Polysaccharides ; Scanning electron microscopy
É parte de: Journal of magnetism and magnetic materials, 2013-10, Vol.343, p.138-143
Notas: ObjectType-Article-2
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Descrição: In this work we report the preparation of fucan-coated magnetite (Fe3O4) nanoparticles by the co-precipitation method. These nanoparticles were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, Mössbauer spectroscopy and magnetic measurements. The nanoparticles showed quasi-spherical morphology with mean sizes around 10nm. XRD and FT-IR confirmed the functionalization of the Fe3O4 nanoparticles with the fucan polysaccharide. Room temperature magnetization measurements and Mössbauer spectroscopy showed that the nanoparticles exhibited superparamagnetic behavior at 300K and the magnetic properties of the Fe3O4 are partly screened by the coating preventing aggregation. •Syntheses of fucan-coated Fe3O4 nanoparticles were made by co-precipitation method.•The efficiency of polysaccharide coated was analyzed by XRD and FT-IR.•The magnetic nanoparticles mean size was 10–20nm.•The fucan-coated magnetite nanoparticles showed superparamagnetic behavior.
Editor: Amsterdam: Elsevier B.V
Idioma: Inglês

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Synthesis and characterization of Fe3O4 nanoparticles coated with fucan polysaccharides

Silva, V.A.J. ; Andrade, P.L. ; Silva, M.P.C. ; Bustamante D., A. ; De Los Santos Valladares, Luis ; Albino Aguiar, J.

Amsterdam: Elsevier B.V

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