Journal of Nanoparticle Research

, Volume 13, Issue 1, pp 53–58

Low temperature synthesis of iron containing carbon nanoparticles in critical carbon dioxide

  • Takashi Hasumura
  • Takahiro Fukuda
  • Raymond L. D. Whitby
  • Ortrud Aschenbrenner
  • Toru Maekawa
Brief Communication

DOI: 10.1007/s11051-010-0142-9

Cite this article as:
Hasumura, T., Fukuda, T., Whitby, R.L.D. et al. J Nanopart Res (2011) 13: 53. doi:10.1007/s11051-010-0142-9

Abstract

We develop a low temperature, organic solvent-free method of producing iron containing carbon (Fe@C) nanoparticles. We show that Fe@C nanoparticles are self-assembled by mixing ferrocene with sub-critical (25.0 °C), near-critical (31.0 °C) and super-critical (41.0 °C) carbon dioxide and irradiating the solutions with UV laser of 266-nm wavelength. The diameter of the iron particles varies from 1 to 100 nm, whereas that of Fe@C particles ranges from 200 nm to 1 μm. Bamboo-shaped structures are also formed by iron particles and carbon layers. There is no appreciable effect of the temperature on the quantity and diameter distributions of the particles produced. The Fe@C nanoparticles show soft ferromagnetic characteristics. Iron particles are crystallised, composed of bcc and fcc lattice structures, and the carbon shells are graphitised after irradiation of electron beams.

Keywords

NanoparticlesCarbonIronFerroceneCritical carbon dioxideUV laserComposite nanomaterials

Supplementary material

11051_2010_142_MOESM1_ESM.pdf (437 kb)
Supplementary Material 1 (PDF 436 kb)

Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Takashi Hasumura
    • 1
  • Takahiro Fukuda
    • 1
  • Raymond L. D. Whitby
    • 2
  • Ortrud Aschenbrenner
    • 2
  • Toru Maekawa
    • 1
  1. 1.Bio-Nano Electronics Research Centre, Toyo UniversityKawagoeJapan
  2. 2.School of Pharmacy and Biomolecular SciencesUniversity of BrightonBrightonUK