Spectroscopic study of nitrogen doping of multi-walled carbon nanotubes.
Combined spatially resolved electron-energy loss spectroscopy (EELS) and high resolution near-edge X-ray absorption fine structure (NEXAFS) spectroscopy have been used to investigate the nitrogen doping of multi-walled carbon nanotubes (N-MWNT). EELS indicates that most of the tubes are nitrogen-doped. NEXAFS spectroscopy reveals pyridine-like and nitrile N structures. High resolution NEXAFS experiments show that the main nitrogen concentration originates from a high amount of molecular N2 encapsulated into only a small quantity of tubes.
Enouz
S
S
Laboratoire des Colloïdes Verres et Nanomatériaux, Université Montpellier II, cc026, Place Eugène Bataillon, 34095 Montpellier, France.
Bantignies
J L
JL
Babaa
M R
MR
Alvarez
L
L
Parent
P
P
Le Normand
F
F
Stéphan
O
O
Poncharal
P
P
Loiseau
A
A
Doyle
B P
BP
D003460:Crystallization / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D009584:Nitrogen / Q000737:chemistry*; D010316:Particle Size; D013057:Spectrum Analysis / Q000379:methods*; D013499:Surface Properties
D046911:Macromolecular Substances; D037742:Nanotubes, Carbon; D009584:Nitrogen