Preparation of Monodisperse Iron Oxide Nanoparticles via the Synthesis and Decomposition of Iron Fatty Acid Complexes.

Nanoscale Research Letters
Chih-Jung ChenRay-Kuang Chiang

Abstract

Iron fatty acid complexes (IFACs) are prepared via the dissolution of porous hematite powder in hot unsaturated fatty acid. The IFACs are then decomposed in five different organic solvents under reflux conditions in the presence of the respective fatty acid. The XRD analysis results indicate that the resulting NPs comprise a mixture of wustite, magnetite, and maghemite phases. The solvents with a higher boiling point prompt the formation of larger NPs containing wustite as the major component, while those with a lower boiling point produce smaller NPs with maghemite as the major component. In addition, it is shown that unstable NPs with a mixed wustite-magnetite composition can be oxidized to pure maghemite by extending the reaction time or using an oxidizing agent.

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Citations

Dec 12, 2012·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Kesarla Mohan KumarBojja Sreedhar
Dec 23, 2015·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Binrui CaoChuanbin Mao
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May 11, 2018·ACS Applied Materials & Interfaces·Riccardo Di CoratoRosaria Rinaldi
Dec 13, 2018·ACS Nano·Artur FeldHorst Weller

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Methods Mentioned

BETA
X-ray
electron diffraction

Software Mentioned

Sigmascan Pro

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