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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 780nm laser excitation. The D band was absent from the Raman spectra recorded with the 514.5nm excitation. Thermogravimetric...
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