Nitrogen-containing carbon nanotubes

Defluorination-assisted nanotube-substitution reaction with ammonia gas for synthesis of nitrogen-doped single-walled carbon nanotubes

“…These methods can be classified into two broad categories. Those belonging to the first category include a method for directly synthesizing nitrogen-doped CNTs through a nanotube-substitution reaction in a nitrogen atmosphere using an arc discharge [7] or in a helium atmosphere using a nitrogensource-containing anode [8], and through chemical vapor deposition (CVD) using a nitrogen source [9][10][11]. The second category includes methods involving a post-synthesis nanotubesubstitution reaction.…”

Ionic Liquids as Precursors for Nitrogen‐Doped Graphitic Carbon

“…Nitrogen-doped carbon nanotubes (CNTs) and nitrogen-doped carbon nanofibers can be synthesized by methods that are similar to the synthesis of bulk CNTs, but using precursors such as melamine, [19,20] benzylamine, [21] acetonitrile, [22,23] N-heterocycles, [24,25] or phthalocyanines. [26] Other nanostructured nitrogen-doped carbons have been prepared using mainly porous anodic alumina (PAA) or mesoporous silicas as hard templates.…”

Frequency-Dependent Polarizability of Boron Nitride Nanotubes: A Theoretical Study

“…Substitution of carbon with boron and nitrogen have been carried out, producing boron-, nitrogen-, and boron-nitrogen-doped carbon nanotubes [41][42][43][44][45][46][47][48][49] and totally substituted boron nitride nanotubes (BN-NTs). 46,47,[50][51][52][53][54][55][56][57][58][59][60][61][62] The structure of these new boronnitrogen-containing fullerenes and nanotubes have been studied and compared with that of carbon nanotubes. [63][64][65][66][67][68][69][70][71][72][73][74][75][76] In particular, it has been noted that BN-NTs have an almost constant band gap of 5.5 eV with respect to the geometric configuration of the tube whereas the band gap of carbon nanotubes show a strong geometry dependence.…”