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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/5095

Title: Synthesis and characterization of magnetic mesoporous particles
Other Titles: Journal of Colloid and Interface Science
Authors: Leite, Carlos Alberto Paula
Morales, Marco A.
Mascarenhas, Artur J. S.
Gomes, Angelo M. S.
Andrade, Heloysa Martins Carvalho
Castilho, Caio Mário Castro de
Galembeck, Fernando
Keywords: Magnetic mesoporous particles;MCM-41;Nanoparticles;Textural properties;Superparamagnetism
Issue Date: 2010
Abstract: Magnetic mesoporous particles were synthesized and their magnetic and structural properties are reported. The synthesis procedure consists of four steps: (i) preparation of magnetite colloidal nanopar- ticles; (ii) growth of a silica layer; (iii) development of the mesoporous structure and (iv) template removal. Two different methods for the template removal were studied and their effectiveness was dis-cussed. Magnetization and Mössbauer spectroscopy measurements showed superparamagnetic behavior for the particles at room temperature. X-ray diffraction and nitrogen adsorption measurements showed a mesoporous MCM-41 structure with 2.48 nm pore diameter and 1023 m2/g total area.
Description: p. 269–277
URI: http://www.repositorio.ufba.br/ri/handle/ri/5095
ISSN: 0021-9797
Appears in Collections:Artigos Publicados em Periódicos (Quimica)

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