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Article Dans Une Revue Chemical Physics Letters Année : 2005

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

Sebastian Osswald
  • Fonction : Auteur
Haihui Ye
  • Fonction : Auteur
Yury Gogotsi
  • Fonction : Auteur

Résumé

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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Matériaux Autre
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Dates et versions

hal-03601046 , version 1 (08-03-2022)

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Sebastian Osswald, Emmanuel Flahaut, Haihui Ye, Yury Gogotsi. Elimination of D-band in Raman spectra of double-wall carbon nanotubes by oxidation. Chemical Physics Letters, 2005, 402 (4-7), pp.422-427. ⟨10.1016/j.cplett.2004.12.066⟩. ⟨hal-03601046⟩
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