Journal
CARBON
Volume 48, Issue 13, Pages 3817-3824Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2010.06.046
Keywords
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Funding
- National Basic Research Program of China [2010CB934700]
- National Science Foundation for Distinguished Young Scholars [50625207]
- Applied Fundamental and Frontier Research Foundation of Tianjin Municipal
- State Key Laboratory of Precise Measurement and Equipment, Tianjin University, China
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High-quality double-walled carbon nanotubes (DWCNTs) thin-films have been fabricated in one-step by the catalytic chemical vapor deposition gas-flow reaction process with acetone as a carbon source in an argon flow. The DWCNTs film is formed through the self-assembly of the DWCNTs in the gas flow, which is achieved by controlling the gas rates in the synthesis reaction. The DWCNT film is self-supported and consists of preferentially aligned high-quality DWCNT bundles. Raman spectral analysis shows a low intensity ratio of the D band and the G band with I-D/I-G being 0.025 indicating a high-quality of DWCNTs at a macroscopic scale. Property measurements show that the DWCNT film is mechanically robust and highly electrically conductive. The formation of high-quality DWCNTs can be attributed to the reaction in the argon environment that is inert and does not attack the DWCNTs at the high synthesis temperature (1170 degrees C). This one-step fabrication process is feasible for large-scale productions of high-quality DWCNTs films with promising structural and functional applications. (C) 2010 Elsevier Ltd. All rights reserved.
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