Controlling the diameter of carbon nanotubes in chemical vapor deposition method by carbon feeding.

Journal Article (Journal Article)

It was found that the diameter distribution of single-walled carbon nanotubes (SWNTs) grown by the chemical vapor deposition (CVD) method could be controlled by the carbon feeding rate at the growth stage. A unified hypothesis on the relationship between nanoparticle size, growth condition, growth temperature, and diameter of the resulting nanotubes was developed and used to explain the relationship. It was shown that the diameters of SWNTs can be controlled even when highly polydisperse nanoparticles were used as catalyst. Such control enabled us to synthesize uniform small-diameter SWNTs at low carbon feeding rates. Additionally, understanding of the important role of the carbon feeding rate can be used to explain the cause of low growth efficiency in most CVD processes. It would also help us to design methods to improve the growth efficiency of CVD growth of nanotubes.

Full Text

Duke Authors

Cited Authors

  • Lu, C; Liu, J

Published Date

  • October 2006

Published In

Volume / Issue

  • 110 / 41

Start / End Page

  • 20254 - 20257

PubMed ID

  • 17034203

Pubmed Central ID

  • 17034203

Electronic International Standard Serial Number (EISSN)

  • 1520-5207

International Standard Serial Number (ISSN)

  • 1520-6106

Digital Object Identifier (DOI)

  • 10.1021/jp0632283


  • eng