The Role of Boron Nitride in Graphite Plasma Arcs

Abstract

Novel graphitic nanostructures (e.g. nanotubes, graphitic onions, polyhedral particles, hemitoroidal nanotube caps and branched nanotubes) are produced by arcing graphite electrodes, containing hexagonal-BN, in inert atmospheres. The introduction of BN or B inside the graphite anode generates long (I 2 0 p ) and well graphitised carbon nanotubes exhibiting boron at their tips. High Resolution Electron Microscopy (HRTEM), Scaning Electron Microscopy (SEM), Electron Energy Loss Spectroscopy (EELS) and X-ray powder diffraction studies reveal the production of B4C crsytals, in addition to little amounts of BC3 nanotubes. Mass spectrometry (MS) studies over the generated soots indicate high yields of large fullerenes (e.g. C70, C76, and Cg4) and thermoGravimetric analysis (TGA) of the nanostructures show high oxidation resistatice.

Boron and phosphorous-doped graphene as a metal-free electrocatalyst for the oxygen reduction reaction in alkaline medium

“…3 For these reasons, we focus on the development of non-precious catalysts for the ORR in alkaline medium. Generally, three methods have been mainly reported to substitute heteroatom into the carbon network: (1) arcdischarge method, [11][12][13] (2) laser-ablation method, 14,15 and (3) chemical vapor deposition (CVD). [4][5][6][7][8][9] Doping the heteroatom into a carbon network can be mainly conducted by (1) intercalation and (2) substitution.…”

Doping and connecting carbon nanotubes

“…Fortunately, some of these nanostructures (e.g. BN [8±11], BC 2 N [12], BC 3 [13,14], CN x [15±18], MoS 2 [19±20], WS 2 [21±2Z2], etc.) have been generated.…”

Global Reactivity of Heterostructure Armchair BC2N‐(4,4) Nanotubes: A Density Functional Theory Investigation

“…Layered materials such as BN and BC 2 N were predicted to form nanotubes and fullerene‐like structures. Some of these materials, e.g., BN and BC 2 N , have been successfully synthesized, and new families of nanotube‐like structures have been reported. Bartlett and coworkers were first observed related B/N/C microstructures.…”