期刊
CARBON
卷 49, 期 4, 页码 1318-1325出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2010.11.052
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资金
- AFOSR
- National Research Council
- US AFOSR [FA9550-09-1-0384]
- Illinois Department of Commerce and Economic Opportunity through the Office of Coal Development
- Illinois Clean Coal Institute (ICCI) [10/7B-5]
- NSF ECCS [0925708]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [0925682] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [0925708] Funding Source: National Science Foundation
Single-walled carbon nanotubes (SWCNTs) with varying degrees of disorder were investigated using multiple-excitation Raman spectroscopy. The lattice disorder was imparted into the nanotubes by the addition of varying amounts of sulfur to the iron catalyst in a thermal chemical vapor deposition process. Changes in the intensities of peaks occurring due to a double resonance Raman process were studied. The intensity of the disorder-induced D band increased with a decrease in the sulfur content. Upon post-synthesis heat treatment, the double resonance process got quenched due to defect healing. The second order G' band and iTOLA bands exhibited a two-peak structure, of which one of the peaks is relatively more sensitive to defects and decreased in intensity with heat treatment. (C) 2010 Elsevier Ltd. All rights reserved.
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