Issue 6, 2003

Preparation of highly pure double-walled carbon nanotubes

Abstract

Double-walled carbon nanotubes (DWNTs) were prepared using floating chemical vapor deposition by adding a small amount of sulfur into the catalyst. The outer diameter of the DWNTs is from 1.5 to 3 nm. Raman study on DWNTs shows that the interlayer distance between the inner and outer tubes varies from 0.33 to 0.41 nm. The as-prepared DWNTs were purified by treatment with H2O2 and HCl to remove the amorphous carbon and catalyst particles from the sample. The carbon content increases from about 30 wt% to above 90 wt% after purification, the great majority of the sample is DWNTs (above 75 wt%).

Graphical abstract: Preparation of highly pure double-walled carbon nanotubes

Article information

Article type
Paper
Submitted
13 Jan 2003
Accepted
09 Apr 2003
First published
22 Apr 2003

J. Mater. Chem., 2003,13, 1340-1344

Preparation of highly pure double-walled carbon nanotubes

J. Wei, L. Ci, B. Jiang, Y. Li, X. Zhang, H. Zhu, C. Xu and D. Wu, J. Mater. Chem., 2003, 13, 1340 DOI: 10.1039/B300484H

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