Preparation of size-controlled nanoparticles of magnetite.

Detalhes bibliográficos
Autor(a) principal: Andrade, Ângela Leão
Data de Publicação: 2012
Outros Autores: Valente, Manuel Almeida, Ferreira, José Maria da Fonte, Fabris, José Domingos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFOP
Texto Completo: http://www.repositorio.ufop.br/handle/123456789/1600
Resumo: Samples of ferrofluids containing chemically stabilized nanoparticles of magnetite (Fe3O4) with tetramethylammonium hydroxide (TMAOH) were prepared by a direct reduction–precipitation method. The influences of aging time and temperature on the size and monodispersion characteristics of the produced nanoparticles were investigated. Transmission electron microscopy, powder X-ray diffraction, Fourier-transform infrared, and magnetization measurements with applied magnetic field up to 2 T were used to characterize the synthesized iron oxides. Raising the temperature of the synthesized material in autoclave affects positively the monodispersion of the nanoparticles, but it was not found to significantly influence the size itself of individual particles.
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spelling Preparation of size-controlled nanoparticles of magnetite.Surface conditioningFerrofluidMagnetic nanoparticleIron oxideSamples of ferrofluids containing chemically stabilized nanoparticles of magnetite (Fe3O4) with tetramethylammonium hydroxide (TMAOH) were prepared by a direct reduction–precipitation method. The influences of aging time and temperature on the size and monodispersion characteristics of the produced nanoparticles were investigated. Transmission electron microscopy, powder X-ray diffraction, Fourier-transform infrared, and magnetization measurements with applied magnetic field up to 2 T were used to characterize the synthesized iron oxides. Raising the temperature of the synthesized material in autoclave affects positively the monodispersion of the nanoparticles, but it was not found to significantly influence the size itself of individual particles.2012-10-10T14:24:05Z2012-10-10T14:24:05Z2012info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfANDRADE, A. L. et al. Preparation of size-controlled nanoparticles of magnetite. Journal of Magnetism and Magnetic Materials, v. 324, n. 10, p. 1753–1757, maio 2012. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0304885311009188>. Acesso em: 10 dez. 2012.03048853http://www.repositorio.ufop.br/handle/123456789/1600O periódico Journal of Magnetism and Magnetic Materials concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3313090498469.info:eu-repo/semantics/openAccessAndrade, Ângela LeãoValente, Manuel AlmeidaFerreira, José Maria da FonteFabris, José Domingosengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOP2024-11-11T02:06:32Zoai:repositorio.ufop.br:123456789/1600Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332024-11-11T02:06:32Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false
dc.title.none.fl_str_mv Preparation of size-controlled nanoparticles of magnetite.
title Preparation of size-controlled nanoparticles of magnetite.
spellingShingle Preparation of size-controlled nanoparticles of magnetite.
Andrade, Ângela Leão
Surface conditioning
Ferrofluid
Magnetic nanoparticle
Iron oxide
title_short Preparation of size-controlled nanoparticles of magnetite.
title_full Preparation of size-controlled nanoparticles of magnetite.
title_fullStr Preparation of size-controlled nanoparticles of magnetite.
title_full_unstemmed Preparation of size-controlled nanoparticles of magnetite.
title_sort Preparation of size-controlled nanoparticles of magnetite.
author Andrade, Ângela Leão
author_facet Andrade, Ângela Leão
Valente, Manuel Almeida
Ferreira, José Maria da Fonte
Fabris, José Domingos
author_role author
author2 Valente, Manuel Almeida
Ferreira, José Maria da Fonte
Fabris, José Domingos
author2_role author
author
author
dc.contributor.author.fl_str_mv Andrade, Ângela Leão
Valente, Manuel Almeida
Ferreira, José Maria da Fonte
Fabris, José Domingos
dc.subject.por.fl_str_mv Surface conditioning
Ferrofluid
Magnetic nanoparticle
Iron oxide
topic Surface conditioning
Ferrofluid
Magnetic nanoparticle
Iron oxide
description Samples of ferrofluids containing chemically stabilized nanoparticles of magnetite (Fe3O4) with tetramethylammonium hydroxide (TMAOH) were prepared by a direct reduction–precipitation method. The influences of aging time and temperature on the size and monodispersion characteristics of the produced nanoparticles were investigated. Transmission electron microscopy, powder X-ray diffraction, Fourier-transform infrared, and magnetization measurements with applied magnetic field up to 2 T were used to characterize the synthesized iron oxides. Raising the temperature of the synthesized material in autoclave affects positively the monodispersion of the nanoparticles, but it was not found to significantly influence the size itself of individual particles.
publishDate 2012
dc.date.none.fl_str_mv 2012-10-10T14:24:05Z
2012-10-10T14:24:05Z
2012
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv ANDRADE, A. L. et al. Preparation of size-controlled nanoparticles of magnetite. Journal of Magnetism and Magnetic Materials, v. 324, n. 10, p. 1753–1757, maio 2012. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0304885311009188>. Acesso em: 10 dez. 2012.
03048853
http://www.repositorio.ufop.br/handle/123456789/1600
identifier_str_mv ANDRADE, A. L. et al. Preparation of size-controlled nanoparticles of magnetite. Journal of Magnetism and Magnetic Materials, v. 324, n. 10, p. 1753–1757, maio 2012. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0304885311009188>. Acesso em: 10 dez. 2012.
03048853
url http://www.repositorio.ufop.br/handle/123456789/1600
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFOP
instname:Universidade Federal de Ouro Preto (UFOP)
instacron:UFOP
instname_str Universidade Federal de Ouro Preto (UFOP)
instacron_str UFOP
institution UFOP
reponame_str Repositório Institucional da UFOP
collection Repositório Institucional da UFOP
repository.name.fl_str_mv Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)
repository.mail.fl_str_mv repositorio@ufop.edu.br
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