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

Chen, Chih-Jung and Lai, Hsin-Yi and Lin, Chee-Cheng and Wang, Jiun-Shen and Chiang, Ray-Kuang (2009) Preparation of Monodisperse Iron Oxide Nanoparticles via the Synthesis and Decomposition of Iron Fatty Acid Complexes. Nanoscale Research Letters, 4 (11). pp. 1343-1350.

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Official URL: http://www.springerlink.com/content/nnq73614v33l03...

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.

Item Type:Article
Uncontrolled Keywords:Iron fatty acid complexes - Iron oxide - Magnetic nanoparticles - Monodisperse
Subjects:Analytical Science > Microscopy and probe methods
Physical Science > Nanomagnetics
Material Science > Nanochemistry
ID Code:7932
Deposited By:IoN
Deposited On:12 Jan 2010 16:13
Last Modified:12 Jan 2010 16:13

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