The European Physical Journal D

, Volume 43, Issue 1, pp 143–146

Formation of single-wall carbon nanotubes in Ar and nitrogen gas atmosphere by using laser furnace technique

Authors

    • Department of ChemistryTokyo Metropolitan University
  • N. Asai
    • Department of ChemistryTokyo Metropolitan University
  • H. Kataura
    • Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
  • Y. Achiba
    • Department of ChemistryTokyo Metropolitan University
Fullerenes, Nanotubes and Nanowires

DOI: 10.1140/epjd/e2007-00083-y

Cite this article as:
Suzuki, S., Asai, N., Kataura, H. et al. Eur. Phys. J. D (2007) 43: 143. doi:10.1140/epjd/e2007-00083-y

Abstract.

The formation of single-wall carbon nanotubes (SWNTs) by using laser vaporization technique in different ambient gas atmosphere was investigated. SWNTs were prepared with Rh/Pd (1.2/1.2 atom%)-carbon composite rod in Ar and nitrogen gas atmosphere, respectively. Raman spectra of raw carbon materials including SWNTs and photoluminescence mapping of dispersed SWNTs in a surfactant solution demonstrate that the diameter distribution of SWNTs prepared in Ar atmosphere is narrower than those obtained by using CVD technique (e.g. HiPco nanotube), even when the ambient temperature is as high as 1150 C. It was also found that nitrogen atmosphere gives wider diameter distribution of SWNTs than that obtained with Ar atmosphere. Furthermore, the relative yield of fullerenes (obtained as byproducts) is investigated by using HPLC (high-performance liquid chromatography) technique. It was found that the relative yield of higher fullerenes becomes lower, when nitrogen is used as an ambient gas atmosphere. Based on these experimental findings, a plausible formation mechanism of SWNTs is discussed.

PACS.

36.40.-c Atomic and molecular clusters61.46.Df Nanotubes81.05.Tp Fullerenes and related materials
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© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007