Raman characterization of carbon nanofibers prepared using electrospinning

  • Wang Y
  • Serrano S
  • Santiago-Avilés J
  • 1

    Readers

    Mendeley users who have this article in their library.
  • N/A

    Citations

    Citations of this article.

Abstract

Ultrafine fibers were spun from polyacrylonitrile (PAN)/N,N-dimethyl formamide (DMF) precursor solution using a homemade electrospinning setup, and then pyrolyzed in vacuum at 873, 1073, 1273 and 1473K, respectively. The pyrolyzed fibers, with diameter of the order of 100nm as revealed by a scanning electron microscope (SEM), were characterized using Raman microspectrometry. Their Raman scattering spectra manifested D and G peaks, characteristic of disordered carbon and graphite, respectively. The D and G peak parameters were fitted using a Gaussian-Lorentzian mixed shape, and graphitic crystallite size and mole fraction in the nanofibers were estimated from the ratio of the integrated intensity of D and G peaks. The graphite domain size was found to be between 1.5 and 2.6nm, increasing with the pyrolyzing temperature. The graphite mole fraction was found to obey an Arrhenius relation with the pyrolyzing temperature, with the graphitization activation energy of 7.36±0.11kJ/mol. © 2002 Elsevier Science B.V. All rights reserved.

Author-supplied keywords

  • Activation energy
  • Carbon
  • Graphite
  • Nanofiber
  • Raman spectrum

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • Y. Wang

  • S. Serrano

  • J.J. Santiago-Avilés

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free