title: Heterodoped nanotubes: theory, synthesis, and characterization of phosphorus-nitrogen doped multiwalled carbon nanotubes.
abstract: 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.
authors.affiliation: Advanced Materials Department, IPICyT, Camino a Presa San José, 2055, San Luis Potosí 78216, México.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Cruz-Silva
authors.forename: David A
authors.initials: DA
authors.lastname: Cullen
authors.forename: Lin
authors.initials: L
authors.lastname: Gu
authors.forename: Jose Manuel
authors.initials: JM
authors.lastname: Romo-Herrera
authors.forename: Emilio
authors.initials: E
authors.lastname: Muñoz-Sandoval
authors.forename: Florentino
authors.initials: F
authors.lastname: López-Urías
authors.forename: Bobby G
authors.initials: BG
authors.lastname: Sumpter
authors.forename: Vincent
authors.initials: V
authors.lastname: Meunier
authors.forename: Jean-Christophe
authors.initials: JC
authors.lastname: Charlier
authors.forename: David J
authors.initials: DJ
authors.lastname: Smith
authors.forename: Humberto
authors.initials: H
authors.lastname: Terrones
authors.forename: Mauricio
authors.initials: M
authors.lastname: Terrones
mesh_terms: 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
chemical_list: D046911:Macromolecular Substances; D037742:Nanotubes, Carbon; D010758:Phosphorus; D009584:Nitrogen