| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8158216 | Journal of Magnetism and Magnetic Materials | 2013 | 6 Pages |
Abstract
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 10Â 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 300Â K and the magnetic properties of the Fe3O4 are partly screened by the coating preventing aggregation.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
V.A.J. Silva, P.L. Andrade, M.P.C. Silva, A. Bustamante D., Luis De Los Santos Valladares, J. Albino Aguiar,