Open AccessInvestigation of Physicochemical and Electrochemical Properties of Single-Walled Carbon Nanotubes Modified with Nitrogen
Author(s) -
В. В. Чесноков,
A. S. Chichkan,
A. V. Puzynin,
D.A. Svintsitsky,
Z. R. Ismagilov,
Valentin N. Parmon
Publication year - 2017
Publication title -
eurasian chemico-technological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.227
H-Index - 9
eISSN - 2522-4867
pISSN - 1562-3920
DOI - 10.18321/ectj676
Subject(s) - carbon nanotube , x ray photoelectron spectroscopy , materials science , nitrogen , carbon fibers , electrolyte , electrochemistry , carbide derived carbon , chemical engineering , inorganic chemistry , electrode , nanotechnology , chemistry , composite material , organic chemistry , carbon nanofiber , composite number , engineering
Composites of the type “nitrogen-containing carbon coating – single-walled carbon nanotubes” were obtained by the treatment of single-walled carbon nanotubes (SWCNT) in a gaseous 40%NH3-1%C2H2-C2H4 mixture at temperatures 600–750 °C. Single-walled carbon nanotubes etched in aqua regia (SWCNTet) and doped with nitrogen (N-SWCNT) were studied by XPS, electron microscopy and IR spectroscopy. Various oxygen-containing functional groups were found to reside on the surface of initial SWCNTet. Upon treatment of SWCNTet in 40%NH3-1%С2Н2-C2H4, polymerization and condensation of hydrocarbons resulted in the formation of a thin nitrogen-containing carbon coating. Specific capacitance per a weight of initial and nitrogen-doped carbon nanotubes in an aqueous electrolyte with 1 M H2SO4 was measured. Specific capacitance of carbon electrodes was found to change symbately with the content of nitrogen-containing functional groups on the SWCNT surface.