Abstract
In this work we performed the filling of single-walled carbon nanotube channels with metallic silver and copper by means of two-step synthesis including imbuing with metal nitrate aqueous solution and further annealing. It has been shown that metal insertion into the nanotube cavities results in the Fermi level upshift and the charge transfer from metal to carbon atoms, thus donor doping of single-walled carbon nanotubes takes place. At the same time, encapsulated silver has a larger donor effect on the carbon nanotubes that has been proved by Raman spectroscopy and X-ray photoelectron spectroscopy.
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Acknowledgements
M.V. Kharlamova thanks Yu.G. Gogotsi (Drexel University) for providing the SWCNTs for synthesis, V.N. Mochalin (Drexel University) for the Raman spectroscopy measurements, and L.V. Yashina (OJSC ‘GIREDMET’, Russia) for the X-ray photoelectron spectroscopy measurements.
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Kharlamova, M.V., Niu, J.J. Comparison of metallic silver and copper doping effects on single-walled carbon nanotubes. Appl. Phys. A 109, 25–29 (2012). https://doi.org/10.1007/s00339-012-7091-3
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DOI: https://doi.org/10.1007/s00339-012-7091-3