Facile preparation of carbon coated magnetic Fe3O4 particles by a combined reduction/CVD process.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorTristão, Juliana Cristina-
Autor(es): dc.creatorOliveira, Aline A. S.-
Autor(es): dc.creatorArdisson, José Domingos-
Autor(es): dc.creatorDias, Anderson-
Autor(es): dc.creatorLago, Rochel Montero-
Data de aceite: dc.date.accessioned2019-11-06T13:33:13Z-
Data de disponibilização: dc.date.available2019-11-06T13:33:13Z-
Data de envio: dc.date.issued2015-04-01-
Data de envio: dc.date.issued2015-04-01-
Data de envio: dc.date.issued2011-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/4890-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/557927-
Descrição: dc.descriptionIn this work, we report a simple method for the preparation of magnetic carbon coated Fe3O4 particles by a single step combined reduction of Fe2O3 together with a Chemical Vapor Deposition process using methane. The temperature programmed reactionmonitored by Mo¨ ssbauer, X-ray Diffraction and Raman analyses showed that Fe2O3 is directly reduced by methane at temperatures between 600 and 900 8C to produce mainly Fe3O4 particles coated with up to 4 wt% of amorphous carbon. Thesemagneticmaterials can be separated into two fractions by simple dispersion in water, i.e., a settled material composed of large magnetic particles and a suspended material composed of nanoparticles with an average size of 100–200 nm as revealed by Scanning Electron Microscopy and High-resolution Transmission Electron Microscopy. Different uses for these materials, e.g., adsorbents, catalyst supports, rapid coagulation systems, are proposed.-
Idioma: dc.languageen-
Direitos: dc.rightsO Periódico Materials Research Bulletin concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3577180915444.-
Palavras-chave: dc.subjectMagnetic materials-
Palavras-chave: dc.subjectVapor deposition-
Palavras-chave: dc.subjectSurface properties-
Título: dc.titleFacile preparation of carbon coated magnetic Fe3O4 particles by a combined reduction/CVD process.-
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