Journal of Materials Science

, Volume 42, Issue 21, pp 9015–9020

A novel method to prepare magnetic nanoparticles: precipitation in bicontinuous microemulsions

  • Jesús Esquivel
  • Isabel A. Facundo
  • M. Esther Treviño
  • Raúl G. López
Article

DOI: 10.1007/s10853-007-1834-0

Cite this article as:
Esquivel, J., Facundo, I.A., Treviño, M.E. et al. J Mater Sci (2007) 42: 9015. doi:10.1007/s10853-007-1834-0

Abstract

A novel method to prepare iron oxide nanoparticles by precipitation in bicontinuous microemulsions is reported. Precipitation reactions were carried out in microemulsions stabilized with a mixture of dodecyltrimethylammonium bromide/didodecyldimethylammonium bromide (3/2, w/w). Nanoparticles were characterized by X-ray diffraction, transmission electronic microscopy (TEM) and vibrating sample magnetometry (VSM), and consisted of magnetite or a mixture of magnetite and maghemite. The particles have an average diameter of 8 nm with a relatively narrow particle size distribution and show possible superparamagnetic behavior. Noticeably higher yields of precipitate are observed for this new approach in comparison with those typicall obtained using reverse microemulsions.

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Jesús Esquivel
    • 1
    • 2
  • Isabel A. Facundo
    • 1
  • M. Esther Treviño
    • 1
  • Raúl G. López
    • 1
  1. 1.Centro de Investigación en Química AplicadaSaltilloMexico
  2. 2.Facultad de Ciencias QuímicasUniversidad Autónoma de CoahuilaSaltilloMexico