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Elimination of D-band in Raman spectra of double-wall carbon nanotubes by oxidation
Journal article   Open access   Peer reviewed

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

Sebastian Osswald, Emmanuel Flahaut, Haihui Ye and Yury Gogotsi
Chemical Physics Letters, v 402(4), pp 422-427
01 Jan 2005
DOI: https://doi.org/10.1016/j.cplett.2004.12.066
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https://doi.org/10.1016/j.cplett.2004.12.066View
Published, Version of Record (VoR) Open

Abstract

Autre [SPI.MAT]Engineering Sciences [physics]/Materials Materials Matériaux
International audience; 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.

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Domestic collaboration
International collaboration
Web of Science research areas
Chemistry, Physical
Physics, Atomic, Molecular & Chemical
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