Synthesis and characterization of Fe3O4 nanoparticles coated with fucan polysaccharides

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

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

201 Citas (Scopus)

Resumen

In this work we report the preparation of fucan-coated magnetite (Fe 3O4) 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) spectro-scopy, Mössbauer spectroscopy and magnetic measurements. The nanoparticles showed quasi-spherical morphology with mean sizes around 10 nm. 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 300 K and the magnetic properties of the Fe3O4 are partly screened by the coating preventing aggregation.

Idioma originalInglés
Páginas (desde-hasta)138-143
Número de páginas6
PublicaciónJournal of Magnetism and Magnetic Materials
Volumen343
DOI
EstadoPublicada - 2013
Publicado de forma externa

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