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Synthesis of silver-coated magnetite nanoparticles |
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| Affiliation: | 1. Laboratory of Magnetism and Nanotechnology, IIT, University of Santiago de Compostela, E-15782 Santiago de Compostela, Galicia, Spain;2. Physical-Chemistry Department, University of the Basque Country, Faculty of Science and Technology, Barrio Sarriena, s/n E-48940, Leioa, Bizkaia, Spain |
| Abstract: | In this paper we describe the preparation of relatively monodisperse silver-coated Fe3O4 nanoparticles by a two-step procedure. Fe3O4 nanoparticles of 9 ± 2 nm in size were first prepared in microemulsions. They were subsequently coated with silver using glucose as reducing agent. The presence of a relatively homogeneous coating of ≈2 nm was confirmed by transmission electron microscopy and X-ray diffraction. A preliminary study of the magnetic properties shows a large decrease of the magnetization for the coated magnetite nanoparticles in comparison with the uncoated ones. |
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