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Elimination of D-band in Raman spectra of double-wall carbon nanotubes by oxidation

Osswald, S. and Flahaut, Emmanuel and Ye, H. and Gogotsi, Yury Elimination of D-band in Raman spectra of double-wall carbon nanotubes by oxidation. (2005) Chemical Physics Letters, vol. 4 (n° 4-7). pp. 422-427. ISSN 0009-2614

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Official URL: http://dx.doi.org/10.1016/j.cplett.2004.12.066

Abstract

In this Letter, we present an in situ Raman spectroscopy study of oxidation-induced changes in the structure and composition of double-wall carbon nanotubes (DWCNTs). Above 480 °C, the intensity of the D band decreases to less than 0.01% of the G band intensity, when measured using the 780 nm laser excitation. The D band was absent from the Raman spectra recorded with the 514.5 nm excitation. Thermogravimetric analysis and high-resolution transmission electron microscopy are used to explain the observed results. We conclude that oxidation provides a purification method for the DWCNT which leads to a sample containing tubes having nearly clean surfaces without disordered carbon.

Item Type:Article
Additional Information:The original publication is available on http://www.sciencedirect.com/science/journal/00092614
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Drexel University (USA)
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Deposited By: Thomas Bonnecarere
Deposited On:19 Jun 2008 09:53

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