Rev.Adv.Mater.Sci.(RAMS)
No 5, Vol. 5, 2003, pages 498-500

PRODUCTION OF IRON-COBALT COMPOUND NANOPARTICLES USING REVERSE MICELLAR SYSTEM

Onur Döker, Emine Bayraktar, Ülkü Mehmetoğlu and Ayla Çalimli

Ankara University, Faculty of Engineering, Department of Chemical Engineering,
06100 Tandogan, Ankara, Turkey

Abstract

Synthesis of nanoparticles using surfactant systems such as water-in-oil micro emulsion systems or reverse micellar systems brings perfect particle control over particle size. In this study, reverse micellar system was formed with anionic surfactant AOT in isooctane to produce CoFe2O4 with particle size ranging with 15 - 150 nm. In addition, effects of reaction time, concentration of FeSO4·7H2O and AOT on the nanoparticle formation were investigated. The molar concentration of FeSO4·7H2O was found to be an important parameter in control of nanoparticle size. A decrease in the concentration of FeSO4·7H2O resulted in larger CoFe2O4 particles.

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