Resumo

PUCA PACHECO, Mercedes; GUERRERO AQUINO, Marco; TACURI CALANCHI, Enrique  e  LOPEZ CAMPOS, Raúl G.. Synthesis and characterization of superparamagnetic nanoparticles obtained by precipitation in inverse microemulsion for biomedical applications. Rev. Soc. Quím. Perú [online]. 2013, vol.79, n.2, pp.99-106. ISSN 1810-634X.

In this work the preparation of nanoparticles of magnetite by methods of precipitation in inverse microemulsions and the conventional method "Chemical Co-precipitation" is reported. Magnetite nanoparticles were characterized by X-ray diffraction, Mössbauer spectroscopy and vibrating sample magnetometer (VSM). The results showed that the nanoparticles obtained by the method of precipitation in inverse microemulsion showed a superparamagnetic behavior and had a particle average diameter of 9 nm, while by the conventional method "Chemical Co-precipitation" were 17 nm. In addition, other benefits observed in the application of the method of precipitation in inverse microemulsion with regard to the conventional method is that it allowed obtaining spheroidal magnetite nanoparticles, monodisperse and with magnetic and chemical properties which might have better results in medical applications.

Palavras-chave : Magnetite; nanoparticles; microemulsion; magnetic properties.

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