Morphology and composition tailoring of Co x Fe3 − xO4 nanoparticles
| dc.contributor.author | Medeiros, I. A. Fernandes | |
| dc.contributor.author | Madigou, V. | |
| dc.contributor.author | Moriyama, André Luis Lopes | |
| dc.contributor.author | Souza, C. Pereira | |
| dc.contributor.author | Leroux, Christine | |
| dc.date.accessioned | 2021-04-28T18:54:35Z | |
| dc.date.issued | 2017-12-28 | |
| dc.description.embargo | 2027-12 | |
| dc.description.resumo | Nano-octahedra of cobalt ferrite Co x Fe3 − xO4 (1 ≤ x < 2), with a broad size distribution around 15–20 nm, were synthesized by a hydrothermal method using nitrates as precursors. For the first time, single-phased nano-octahedra of cobalt-rich ferrite Co x Fe3 − xO4 (x = 1.5) were synthesized. The nano-octahedra are crystallized in a normal spinel structure, with tetrahedral sites occupied by Co2+. This specific octahedral shape was obtained with anionic, cationic, and nonionic surfactants. The nature of the surfactant influenced the chemical composition of the powder and the size of the nano-octahedra. The {100} truncation of the octahedra is more pronounced for the small particles. For the first time, single-phased nanoparticles with as much as x = 1.8 cobalt were synthesized with ethylene glycol as solvent. These nanoparticles, around 8 nm in size, have no specific shape and possess a lacunar spinel structure similar to maghemite. The samples were characterized by X-ray diffraction, transmission electron microscopy, and energy-dispersive spectroscopy | pt_BR |
| dc.identifier.citation | MEDEIROS, I. A. F.; MADIGOU, V. ; MORIYAMA, A. L. L.; SOUZA, C. P.; LEROUX, CH. . Morphology and composition tailoring of CoxFe3-−-xO4 nanoparticles. JOURNAL OF NANOPARTICLE RESEARCH, v. 20, p. 3, 2018. Disponível em: https://link.springer.com/article/10.1007%2Fs11051-017-4097-y. Acesso em: 28 abr. 2021. https://doi.org/10.1007/s11051-017-4097-y. | pt_BR |
| dc.identifier.doi | 10.1007/s11051-017-4097-y | |
| dc.identifier.issn | 1388-0764 | |
| dc.identifier.issn | 1572-896X | |
| dc.identifier.uri | https://repositorio.ufrn.br/handle/123456789/32336 | |
| dc.language | en | pt_BR |
| dc.publisher | Springer Nature | pt_BR |
| dc.rights | Attribution 3.0 Brazil | * |
| dc.rights.uri | http://creativecommons.org/licenses/by/3.0/br/ | * |
| dc.subject | Cobalt ferrite | pt_BR |
| dc.subject | Surfactant | pt_BR |
| dc.subject | Hydrothermal synthesis | pt_BR |
| dc.subject | Octahedra nanoparticles | pt_BR |
| dc.subject | Transmission electron microscopy | pt_BR |
| dc.subject | Particle characterization | pt_BR |
| dc.title | Morphology and composition tailoring of Co x Fe3 − xO4 nanoparticles | pt_BR |
| dc.type | article | pt_BR |
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