CINDECA   05422
CENTRO DE INVESTIGACION Y DESARROLLO EN CIENCIAS APLICADAS "DR. JORGE J. RONCO"
Unidad Ejecutora - UE
artículos
Título:
HIGHLY ANISOTROPIC DISTRIBUTION OF IRON NANOPARTICLES WITHIN MCM-41 MESOPOROUS SILICA
Autor/es:
M.S.MORENO, M.WEYLAND, P.A.MIDGLEY, J.F.BENGOA, M.V.CAGNOLI, N.G.GALLEGOS, A.M.ALVAREZ AND S.G.MARCHETTI
Revista:
MICRON
Editorial:
Elsevier
Referencias:
Año: 2006 vol. 37 p. 52 - 52
ISSN:
0968-4328
Resumen:
Electron microscopy techniques are used to visualize the spatial distribution of iron nanoparticles inside a mesoporous MCM-41 molecular sieve. Direct observation of the iron oxide nanoparticles by STEM-HAADF imaging reveals a highly non-uniform spatial distribution inside the mesopores. These particles are retained in the pores after a reduction treatment unlike the behavior found in other similar systems. It is found that thermal treatments induce changes in its morphology, creating nanowires from particle strings. q 2005 Elsevier Ltd. All rights reserved. Keywords: STEM-HAADF; Mesoporous materials; Catalysis; Fe/MCM-41; Iron oxide nanoparticles
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