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No.3(pp.81-113)

Home > Issues > Volume 13 (2008) > No.3(pp.81-113)

An Environmentally-friendly Precursor, Ferrous Acetate, in preparation for Monodisperse Iron Oxide Nanoparticles

Journal of Magnetics, Volume 13, Number 3, 30 Sep 2008, Pages 106-109

Yong-Jae Suh*

(Nano-Materials Group, Korea Institute of Geoscience & Mineral Resources), Dae-Sup Kil(Nano-Materials Group, Korea Institute of Geoscience & Mineral Resources), Kang-Sup Chung(Nano-Materials Group, Korea Institute of Geoscience & Mineral Resources), Hyo-Sook Lee(Nano-Materials Group, Korea Institute of Geoscience & Mineral Resources), Huiping Shao(School of Materials Science and Engineering, University of Science and Technology Beijing)

Abstract

Almost monodisperse iron oxide nanoparticles with an average particle size ranging from 5 to 43 nm were fabricated using an environmentally friendly starting material, ferrous acetate. The smallest particles were formed in the presence of a reductant, 1,2-dodecanediol, while the particle size increased with increasing concentration of dispersing agents. The dispersants consisted of various combinations of oleic acid, oleylamine, trioctylphosphine, and polyvinylpyrrolidone. The threshold temperature to form crystalline particles was found to be 240℃. The 43 nm nanoparticles exhibited a room temperature saturation magnetization and coercivity of 57 emu/g and 47 Oe, respectively.

Keywords: magnetic materials; nanomaterials; toxicity; starting material; iron(II) acetate; thermal decomposition

DOI: 10.4283/JMAG.2008.13.3.106

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