Eur. Phys. J. D 34, 271-274 (2005)
https://doi.org/10.1140/epjd/e2005-00156-y

Electronic state of nitrogen incorporated into CN_x nanotubes

¹ Nikolaev Institute of Inorganic Chemistry, SB RAS, pr. Ak. Lavrentieva 3, Novosibirsk 630090, Russia
² Samsung Advanced Institute of Technology, PO Box 111, Suwon 440-600, Korea
³ Boreskov Institute of Catalysis, SB RAS, pr. Ak. Lavrentieva 5, Novosibirsk 630090, Russia

Corresponding author: ^a bul@che.nsk.su

Received: 6 September 2004
Published online: 13 July 2005

Abstract

CN_x nanotubes have been prepared by acetonitrile decomposition over Ni, Co and Ni/Co catalysts. X-ray photoelectron spectroscopy study on the samples revealed a change of nitrogen concentration and shape of N 1s line with variation of the catalyst used. Quantum-chemical calculations on tube fragments showed the energy of N 1s level depends on the atomic structure of carbon tube and kind of incorporated nitrogen. The largest binding energies were found to be characteristic of three-coordinated nitrogen atoms doping the zigzag and chiral carbon nanotubes.