Crystallography Reports

, Volume 56, Issue 2, pp 310–314 | Cite as

Noncatalytic synthesis of carbon nanotubes by chemical vapor deposition

  • R. R. IsmagilovEmail author
  • P. V. Shvets
  • A. Yu. Kharin
  • A. N. Obraztsov
Nanomaterials, Ceramics


A new method is proposed to obtain uniform arrays of multiwall carbon nanotubes without catalysts. Nanotubes have been formed by carbon condensation from a hydrogen-methane gas mixture activated by a dc discharge. Structural and morphological investigations of the obtained material were performed by Raman spectroscopy, scanning and transmission electron microscopy, energy-dispersive X-ray analysis, and electron energy loss spectroscopy. It is shown that the obtained nanotubes contain no impurities that could act as catalysts. Based on these experimental data, it is concluded that the nanotube synthesis under study is noncatalytic. Possible mechanisms of this synthesis are considered.


Crystallography Report Electron Energy Loss Spectroscopy Transmission Electron Micro Multiwall CNTs Transmission Electron Micro Image 
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Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  • R. R. Ismagilov
    • 1
    Email author
  • P. V. Shvets
    • 1
  • A. Yu. Kharin
    • 1
  • A. N. Obraztsov
    • 1
  1. 1.Moscow State UniversityMoscowRussia

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