Morphology and composition tailoring of Co x Fe3 − x O4 nanoparticles

Nano-octahedra of cobalt ferrite CoxFe3 − xO4 (1 ≤ x 

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Published in:Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2018-01, Vol.20 (1), p.1-12
Main Authors: I A Fernandes de Medeiros, Madigou, V, Lopes-Moriyama, A L, Pereira de Souza, C, Leroux, Ch
Format: Article
Language:English
Subjects:
Carbon dioxide
Cobalt
Cobalt ferrites
Crystallization
Diffraction
Electron microscopy
Energy transmission
Ethylene glycol
Nanoparticles
Nitrates
Nonionic surfactants
Particle size distribution
Powder
Size distribution
Spectroscopy
Spinel
Surfactants
Synthesis
Transmission electron microscopy
X-ray diffraction
X-rays
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container_title Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology
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creator I A Fernandes de Medeiros
Madigou, V
Lopes-Moriyama, A L
Pereira de Souza, C
Leroux, Ch
description Nano-octahedra of cobalt ferrite CoxFe3 − xO4 (1 ≤ x 
doi_str_mv 10.1007/s11051-017-4097-y
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For the first time, single-phased nano-octahedra of cobalt-rich ferrite CoxFe3 − 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. 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subjects Carbon dioxide
Cobalt
Cobalt ferrites
Crystallization
Diffraction
Electron microscopy
Energy transmission
Ethylene glycol
Nanoparticles
Nitrates
Nonionic surfactants
Particle size distribution
Powder
Size distribution
Spectroscopy
Spinel
Surfactants
Synthesis
Transmission electron microscopy
X-ray diffraction
X-rays
title Morphology and composition tailoring of Co x Fe3 − x O4 nanoparticles
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