Preparation of composite with silica-coated nanoparticles of iron oxide spinels for applications based on magnetically induced hyperthermia.

Nenhuma Miniatura Disponível

Data

2013

Título da Revista

ISSN da Revista

Título de Volume

Editor

Resumo

It is reported a novel method to prepare magnetic core (iron oxide spinels)–shell (silica) composites containing well-dispersed magnetic nanoparticles in aqueous solution. The synthetic process consists of two steps. In a first step, iron oxide nanoparticles obtained through co-precipitation are dispersed in an aqueous solution containing tetramethylammonium hydroxide; in a second step, particles of this sample are coated with silica, through hydrolyzation of tetraethyl orthosilicate. The intrinsic atomic structure and essential properties of the core–shell system were assessed with powder X-ray diffraction, Fourier transform infrared spectrometry, Mössbauer spectroscopy and transmission electron microscopy. The heat released by this ferrofluid under an AC-generated magnetic field was evaluated by following the temperature evolution under increasingmagnetic field strengths.Results strongly indicate that this ferrofluid based on silica-coated iron oxide spinels is technologically a very promising material to be used in medical practices, in oncology.

Descrição

Palavras-chave

Biomedicine, Nanotechnology, Magnetic hyperthermia, Ferrofluid

Citação

ANDRADE, A. L. et al. Preparation of composite with silica-coated nanoparticles of iron oxide spinels for applications based on magnetically induced hyperthermia. Hyperfine Interactions, v. 218, p. 71-82, 2013. Disponível em: <https://link.springer.com/article/10.1007/s10751-012-0681-9>. Acesso em: 20 abr. 2017.

Avaliação

Revisão

Suplementado Por

Referenciado Por