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Dimensional comparative study of magnetic nanoparticles dispersed in water or kerosene

M. RĂCUCIU1,* , D. E. CREANGĂ2, N. APETROAIE2, E. BÎRSAN1

Affiliation

  1. “Lucian Blaga” University, Faculty of Sciences, Dr.Ratiu Street, No.5-7, Sibiu, 550024, Romania
  2. “Al. I. aCuza”University, Faculty of Physics, 11A Blvd.Copou, 700506, Iasi, Romania

Abstract

The present study is focused on a comparison of the physical properties and dimensional characterization of magnetic nanoparticles suspensions in water or kerosene (aqueous versus oily magnetic fluids) prepared in our laboratories for biomedical or technical applications. The magnetic nanoparticles were prepared by chemical co-precipitation from ferric and ferrous salts in alkali medium. In the kerosene based magnetic fluids magnetic particles were coated with oleic acid at relatively high temperature in hexane medium. In the aqueous magnetic fluid the magnetic nanoparticles obtained by similar chemical co-precipitation method were dispersed following functionalizing with citric acid also at high temperature. Both types of nanoparticles colloidal suspensions were investigated by transmission electron microscopy (TEM), atomic force microscopy (AFM) and differential thermal analysis (DTA)..

Keywords

TEM analysis, AFM tapping mode, dimensional analysis, DTA analysis.

Submitted at: Sept. 25, 2007
Accepted at: Feb. 18, 2008

Citation

M. RĂCUCIU, D. E. CREANGĂ, N. APETROAIE, E. BÎRSAN, Dimensional comparative study of magnetic nanoparticles dispersed in water or kerosene, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 2, pp. 280-283 (2008)