https://repositorio.ufba.br/handle/ri/5095
Tipo: | Artigo de Periódico |
Título: | Synthesis and characterization of magnetic mesoporous particles |
Título(s) alternativo(s): | Journal of Colloid and Interface Science |
Autor(es): | 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 |
Autor(es): | 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 |
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. |
Palavras-chave: | Magnetic mesoporous particles MCM-41 Nanoparticles Textural properties Superparamagnetism |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/5095 |
Data do documento: | 2010 |
Aparece nas coleções: | Artigo Publicado em Periódico (Química) |
Arquivo | Descrição | Tamanho | Formato | |
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979709013873-main.pdf | 814,56 kB | Adobe PDF | Visualizar/Abrir |
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