TITLE

High-yield synthesis of single-walled carbon nanotubes by gravity-free arc discharge

AUTHOR(S)
Kanai, M.; Koshio, A.; Shinohara, H.; Mieno, T.; Kasuya, A.; Ando, Y.; Zhao, X.
PUB. DATE
October 2001
SOURCE
Applied Physics Letters;10/29/2001, Vol. 79 Issue 18, p2967
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Single-walled carbon nanotubes (SWNTs) have been produced in high yield by the dc arc discharge technique under gravity-free conditions. Gravity-free conditions can reduce the convection flow of the buffer gas during the arc discharge, which results in the increase of high thermostatic volume around the arc flame. The yields of both the total soot and SWNTs in soot are significantly increased. Raman spectroscopy and transmission electron microscopy analyses reveal that the diameter distribution of SWNTs has shifted to a larger diameter region under the gravity-free condition. The annealing process in high-thermostatic atmosphere is a crucial experimental factor to selectively synthesize a certain diameter SWNT in high yield. © 2001 American Institute of Physics.
ACCESSION #
5402543

 

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