Synthesis and characterization of phosphorus–nitrogen doped multiwalled carbon nanotubes

Fabrication and characterisation of sulfur and phosphorus (S/P) co-doped carbon nanotubes

“…This result is in agreement with catalyst-based CNTs grown from Fe metals [1,8]. The reason of this extraordinary wall thickness was be associated with the influence of P atoms intercalated in the graphitic lattice of CNTs structure, inducing the curvature structures of nanotube walls due to the different bond length of C-P and C-C [7,16,17].…”

“…Some studies have reported about the synthesis of CNTs doped with S and P grown from catalyst. Nevertheless, these protocols suffer from many limitations as a result of the interactions between doping atoms and catalyst leading to deactivation and also uncontrolled growth of CNTs [7][8][9][10][11]. As far as we know, there is no study regarding catalyst-free fabrication of CNTs doped with S, P and S/P inside NAA templates.…”

Characterization of phosphorus-doped multiwalled carbon nanotubes

“…The spectrum shows two high intensity peaks positioned at 133.3 and 129.5 eV, which were assigned to P-O and C-P bondings, respectively, as obtained in similar previous work in phosphorus doped graphite, fullerene-like carbon, and carbon nanotubes. 7,8,19,20 The P 2p signal has been fit using Gaussian-Lorentzian functions to obtain two components for each peak; binding energies for P 2p 3=2 of 133.1 eV and for P 2p 1=2 of 133.9 eV were obtained for the high intensity peak assigned to P-O bonds in phosphorus-iron compounds. 7,8 The peak of lower intensity, found at 129.5 eV, was fitted by P 2p 3=2 at 129.3 eV and 2p 1=2 at 130.0 eV, matching well with C-P bonding in the organic compound triphenylphosphine.…”

One-dimensional nitrogen-containing carbon nanostructures

“…15) [380]. Using a mixture of ferrocene, pyridine, and triphenylphosphine as precursors for injection-assisted CVD, Yu et al [381] prepared the first vertically aligned P-containing…”