Journal of Nanoparticle Research

, Volume 5, Issue 5, pp 589–596

Formation of Silica-Embedded Iron-Oxide Nanoparticles in Low-Pressure Flames

  • Christian Janzen
  • Jörg Knipping
  • Bernd Rellinghaus
  • Paul Roth
Article

DOI: 10.1023/B:NANO.0000006109.37251.fd

Cite this article as:
Janzen, C., Knipping, J., Rellinghaus, B. et al. Journal of Nanoparticle Research (2003) 5: 589. doi:10.1023/B:NANO.0000006109.37251.fd

Abstract

The formation of γ-Fe2O3 nanoparticles embedded in a silica matrix has been studied in low-pressure premixed flames of hydrogen and oxygen. The organometallic precursors iron-pentacarbonyl (Fe(CO)5) and tetramethylsilane (Si(CH3)4) were used as starting materials for the core particles and matrix material, respectively. Fe2O3 particles with a diameter of about 3–7nm were successfully embedded in a surrounding silica matrix of about 9–13nm in diameter. The iron oxide particle kernels are superparamagnetic at room temperature.

Fe2O3/SiO2nano-compositslow-pressure flamesuperparamagnetism

Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • Christian Janzen
    • 1
  • Jörg Knipping
    • 1
  • Bernd Rellinghaus
    • 1
  • Paul Roth
    • 1
  1. 1.Institut für Verbrennung und GasdynamikUniversität Duisburg – EssenDuisburgGermany