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Journal of Nanoparticle Research

Erschienen in:

01.10.2011 | Research Paper

A study of oleic acid-based hydrothermal preparation of CoFe₂O₄ nanoparticles

verfasst von: Anton Repko, Daniel Nižňanský, Jana Poltierová-Vejpravová

Erschienen in: Journal of Nanoparticle Research | Ausgabe 10/2011

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Abstract

Nearly monodisperse, well crystalline, superparamagnetic CoFe₂O₄ nanoparticles with diameter of 6 nm were synthesized in oleic acid–water–pentanol system at 180 °C. Hydrothermal procedure, as an efficient and environment friendly alternative to organic decomposition methods, was investigated by variation of reaction conditions, and the particle formation mechanism was finally proposed (i.e., hydrolysis of metal oleates in organic phase, with size of the particles (5–8 nm) controlled by polarity-driven precipitation into water phase). As-prepared particles were hydrophobic due to coating by oleic acid. Further modification with dimercaptosuccinic acid led to water-dispersible particles with hydrodynamic diameter of 20 nm. Prepared particles were investigated by TEM, XRD, ICP-AES, light scattering, SQUID magnetometry, and Mössbauer spectroscopy.

Vorheriger Artikel Dynamic modeling of submerged nanoparticle pushing based on atomic force microscopy in liquid medium

Nächster Artikel Effect of nanofluids on thin film evaporation in microchannels

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Titel: A study of oleic acid-based hydrothermal preparation of CoFe2O4 nanoparticles
verfasst von: Anton Repko
Daniel Nižňanský
Jana Poltierová-Vejpravová
Publikationsdatum: 01.10.2011
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 10/2011
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-011-0483-z

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