Preparation of monodisperse iron oxide nanoparticles via the synthesis and decomposition of iron fatty acid complexes

Chih Jung Chen, Hsin Yi Lai, Chee Cheng Lin, Jiun Shen Wang, Ray Kuang Chiang

Research output: Contribution to journalArticle

60 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1343-1350
Number of pages8
JournalNanoscale Research Letters
Volume4
Issue number11
DOIs
Publication statusPublished - 2009 Oct 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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