Abstract—
A method has been demonstrated for doping carbon nanotubes (CNTs) with nitrogen during synthesis in an acetylene + ammonia atmosphere at different temperatures in the range 550–750°C, and conditions have been found for effective nitrogen doping of CNTs depending on synthesis temperature. The concentrations of various elements in the synthesized CNTs have been determined by X-ray photoelectron spectroscopy. Raman measurements with the use of a Raman microscope have made it possible to follow variations in the relative intensities of the G and D bands as functions of nitrogen dopant concentration in the CNTs. We have detected strong Raman overtone combination satellites whose parameters depend on the structural perfection of the synthesized CNTs.
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This work was supported by the Russian Federation Ministry of Science and Higher Education, project no. 0004-2019-0003.
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Translated by O. Tsarev
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Bulyarskiy, S.V., Gorelik, V.S. & Ryazanov, R.M. Nitrogen Doping of Carbon Nanotubes Synthesized in Flowing Acetylene and Ammonia. Inorg Mater 56, 1006–1010 (2020). https://doi.org/10.1134/S0020168520100027
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DOI: https://doi.org/10.1134/S0020168520100027