Synthesis and characterization of Fe3O4 nanoparticles coated with fucan polysaccharides

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, M...

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Veröffentlicht in:Journal of magnetism and magnetic materials 2013-10, Vol.343, p.138-143
Hauptverfasser: Silva, V.A.J., Andrade, P.L., Silva, M.P.C., Bustamante D., A., De Los Santos Valladares, Luis, Albino Aguiar, J.
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Sprache:eng
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Zusammenfassung: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.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2013.04.062