Jump to main content
Jump to site search

Issue 19, 2009
Previous Article Next Article

Thermally controlled synthesis of single-wall carbon nanotubes with selective diameters

Author affiliations

Abstract

High quality single-wall carbon nanotubes were synthesized on a MgO supported Fe-Co catalyst system using an inductive radio frequency catalytic chemical vapor deposition method with methane utilized as the hydrocarbon source. The synthesis temperature was varied between 700–1000 °C, and major differences when it comes to the size controllability of the catalyst nano-particles and the nanotube morphology were noticed when the reaction temperature was set at 800 and at 1000 °C. The structural and morphological properties of the catalyst system were analyzed by microscopy, X-ray diffraction and surface area analysis. The electron microscopy analyses of the catalyst system showed that the Fe/Co active metal nano-clusters have a very narrow size distribution when the catalyst system is thermally treated at 800 °C. As a result, highly crystalline single-wall carbon nanotubes with a narrow diameter distribution were successfully synthesized. It was found that by increasing the reaction temperature from 800 to 1000 °C, the diameter distribution of Fe/Co nano-particles broadens and hence affects the nanotube diameters. At 1000 °C the nanotubes presented a wider diameter distribution when compared to the ones grown at lower temperatures, a fact correlated to the changes in the catalyst structural morphology. Furthermore, the nanotubes synthesized at different reaction temperatures were analyzed using several techniques such as electron microscopy, thermogravimetric analysis, Raman and UV-Vis-NIR spectroscopy.

Graphical abstract: Thermally controlled synthesis of single-wall carbon nanotubes with selective diameters

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 15 Dec 2008, accepted on 17 Feb 2009, published on 17 Mar 2009 and first published online on 17 Mar 2009


Article type: Paper
DOI: 10.1039/B822469B
Citation: J. Mater. Chem., 2009,19, 3004-3012
  •   Request permissions

    Thermally controlled synthesis of single-wall carbon nanotubes with selective diameters

    E. Dervishi, Z. Li, F. Watanabe, Y. Xu, V. Saini, A. R. Biris and A. S. Biris, J. Mater. Chem., 2009, 19, 3004
    DOI: 10.1039/B822469B

Search articles by author