Examination of the effects of nitrogen on the CVD diamond growth mechanism using in situ molecular beam mass spectrometry

Influence of CO2 and N2 on the growth of carbon nanotubes by using thermal chemical vapor deposition

“…When the nitrogen was introduced, the atomic nitrogen reacted with hydrogen and formed ammonia. This conclusion is the same as that of Tsang et al [21]. Ammonia does not manifest itself by its influence on the morphology of the metal particles but by its role of inhibiting the formation of amorphous carbon during the synthesis, specifically during the initial stages [11].…”

Effect of nitrogen and hydrogen on the growth of multiwall carbon nanotubes on flexible carbon cloth using thermal chemical vapor deposition

“…Since adding the hydrogen species in the CNT growth increases the etching of the amorphous carbons deposited on the nanoparticle catalyst, the size of catalysts was reduced by hydrogen etching. Therefore, increasing of the hydrogen gas makes the CNTs thinner and narrower [24,25]. Similar to the measurement of Fig.…”

Catalytic decomposition of HCN on heated W surfaces to produce CN radicals

“…Tsang et al have identified NH 3 , CH 4 and C 2 H 2 in the catalytic decomposition of HCN on heated Ta surfaces [24]. Although the populations of NH 3 and C 2 H 2 were very small, the population of CH 4 was around 20% of residual HCN.…”

“…The catalytic decomposition of HCN on heated metal surfaces has already been studied using mass-spectrometric techniques, since HCN is one of the candidates to fabricate carbon nitride films [23,24]. When heated Ta was used as a catalyzer, NH 3 , CH 4 and C 2 H 2 were identified as final products.…”