Heterodoped nanotubes: theory, synthesis, and characterization of phosphorus-nitrogen doped multiwalled carbon nanotubes.
Arrays of multiwalled carbon nanotubes doped with phosphorus (P) and nitrogen (N) are synthesized using a solution of ferrocene, triphenyl-phosphine, and benzylamine in conjunction with spray pyrolysis. We demonstrate that iron phosphide (Fe(3)P) nanoparticles act as catalysts during nanotube growth, leading to the formation of novel PN-doped multiwalled carbon nanotubes. The samples were examined by high resolution electron microscopy and microanalysis techniques, and their chemical stability was explored by means of thermogravimetric analysis in the presence of oxygen. The PN-doped structures reveal important morphology and chemical changes when compared to N-doped nanotubes. These types of heterodoped nanotubes are predicted to offer many new opportunities in the fabrication of fast-response chemical sensors.
Cruz-Silva
Eduardo
E
Advanced Materials Department, IPICyT, Camino a Presa San José, 2055, San Luis Potosí 78216, México.
Cullen
David A
DA
Gu
Lin
L
Romo-Herrera
Jose Manuel
JM
Muñoz-Sandoval
Emilio
E
López-Urías
Florentino
F
Sumpter
Bobby G
BG
Meunier
Vincent
V
Charlier
Jean-Christophe
JC
Smith
David J
DJ
Terrones
Humberto
H
Terrones
Mauricio
M
D003198:Computer Simulation; D003460:Crystallization / Q000379:methods*; D004553:Electric Conductivity; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008956:Models, Chemical; D008958:Models, Molecular; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D009584:Nitrogen / Q000737:chemistry*; D010316:Particle Size; D010758:Phosphorus / Q000737:chemistry*; D012666:Semiconductors; D013499:Surface Properties
D046911:Macromolecular Substances; D037742:Nanotubes, Carbon; D010758:Phosphorus; D009584:Nitrogen