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Surface modification of single-walled carbon nanotubes by functional nitrogen-containing groups and study of their properties

  • Physical Chemistry
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Abstract

Treatment of single-walled carbon nanotubes (SWCNT) in a gaseous 40%NH3–1%С2Н2–C2H4 mixture at 600 and 700°С led to “nitrogen-containing carbon coating–single-wall carbon nanotubes” composites. Single-walled carbon nanotubes after etching in aqua regia (SWCNTetch) and doped with nitrogen (N-SWCNT) were studied by XPS, electron microscopy, and IR spectroscopy. It was found that the initial SWCNTetch surface contains various oxygen-containing functional groups. Treatment of SWCNTetch in a 40%NH3–1%С2Н2–C2H4 mixture led to the formation of a thin carbon coating on the carbon nanotube surface due to polymerization and condensation of hydrocarbons. After treatment at 600°C, the formation of nitrogen-containing functional groups is insignificant; however, when the treatment temperature is increased to 700°C, the nitrogen content reaches 0.5 at % of the weight of the N-SWCNT sample.

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Chesnokov, V.V., Chichkan, A.S., Paukshtis, E.A. et al. Surface modification of single-walled carbon nanotubes by functional nitrogen-containing groups and study of their properties. Dokl Phys Chem 476, 186–189 (2017). https://doi.org/10.1134/S0012501617100049

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  • DOI: https://doi.org/10.1134/S0012501617100049

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