Raman, EELS and XPS studies of maghemite decorated multi-walled carbon nanotubes

Spectrochim Acta A Mol Biomol Spectrosc. 2014:121:715-8. doi: 10.1016/j.saa.2013.11.101. Epub 2013 Nov 28.

Abstract

Iron oxide particles with the diameter being 5-10 nm were attached onto the sidewalls of multi-walled carbon nanotubes (MWCNTs) by the thermal decomposition of cyclopentadieny iron (II) dicarbonyl dimmer. The red shift of G-mode from 1579 cm(-1) to 1571 cm(-1) in the Raman profile of the decorated MWCNTs is indicative of the attachment of nanoparticles. Electron energy loss spectroscopy and X-ray photoelectron spectroscopy analyses reveals that the attached nanoparticles are composed of a maghemite phase. Transmission electron microscopy suggests the maghemite particles are covered with amorphous carbon materials and form a core-shell structure.

Keywords: Carbon nanotube; Cyclopentadieny iron (II) dicarbonyl dimmer; EELS; Maghemite; Raman; XPS.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Dimerization
  • Electrons
  • Ferric Compounds / chemistry*
  • Nanotubes, Carbon / chemistry*
  • Nanotubes, Carbon / ultrastructure
  • Photoelectron Spectroscopy*
  • Spectrum Analysis*
  • Spectrum Analysis, Raman*
  • Thermogravimetry

Substances

  • Ferric Compounds
  • Nanotubes, Carbon
  • ferric oxide