Issue 20, 2004

Synthesis of magnetic silica-based nanocomposites containing Fe3O4 nanoparticles

Abstract

A new mesostructured hybrid organic–inorganic silica host with internal anchored acetylacetonate groups has been used as a matrix for the growing and organization of Fe3O4 nanoparticles. The approach used consists in the impregnation and the subsequent organic solution-phase decomposition of the molecular precursor Fe[(OC(CH3))2CH]3 into the hybrid silica pores. The magnetic nanocomposite material obtained was fully characterized using transmission electron microscopy (TEM), infrared spectroscopy (IR), nitrogen physisorption, X-ray diffraction techniques and magnetic measurements. These measurements reveal the presence of uniformly sized pure magnetite nanoparticles with a narrow size distribution of 3–4.5 nm exclusively inside the silica matrix. The data demonstrate that the covalent anchoring of the molecular precursor in the silica plays a crucial role in the fabrication of nanocomposites presenting a homogeneous spatial distribution of nanoparticles.

Graphical abstract: Synthesis of magnetic silica-based nanocomposites containing Fe3O4 nanoparticles

Article information

Article type
Paper
Submitted
22 Jun 2004
Accepted
20 Jul 2004
First published
25 Aug 2004

J. Mater. Chem., 2004,14, 3026-3033

Synthesis of magnetic silica-based nanocomposites containing Fe3O4 nanoparticles

V. Matsura, Y. Guari, J. Larionova, C. Guérin, A. Caneschi, C. Sangregorio, E. Lancelle-Beltran, A. Mehdi and R. J. P. Corriu, J. Mater. Chem., 2004, 14, 3026 DOI: 10.1039/B409449B

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