Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/74041
Type: Artigo de periódico
Title: Synthesis and characterization of magnetic mesoporous particles
Author: Morales, MA
Mascarenhas, AJS
Gomes, AMS
Leite, CAP
Andrade, HMC
de Castilho, CMC
Galembeck, F
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 nanoparticles; (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 discussed. Magnetization and Mossbauer 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 m(2)/g total area. (C) 2009 Elsevier Inc. All rights reserved.
Subject: Magnetic mesoporous particles
MCM-41
Iron oxide
Nanoparticles
Textural properties
Superparamagnetism
Country: EUA
Editor: Academic Press Inc Elsevier Science
Rights: fechado
Identifier DOI: 10.1016/j.jcis.2009.10.052
Date Issue: 2010
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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