Effect of Reaction Time, Weight Ratio, and Type of Catalyst on the Yield of Single-Wall Carbon Nanotubes Synthesized by Chemical Vapor Deposition of Acetylene

Dundar-Tekkaya E. , KARATEPE N.

FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES, vol.23, no.6, pp.535-541, 2015 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 23 Issue: 6
  • Publication Date: 2015
  • Doi Number: 10.1080/1536383x.2013.873030
  • Page Numbers: pp.535-541


The single wall carbon nanotubes (SWCNTs) were synthesized by catalytic chemical vapor deposition of C2H2 at 800 degrees C for 30 and 60 minutes. The transition metals of Fe, Co, Ni, V, and bimetallic mixture of Fe-Co impregnated on MgO powder substrate with weight ratios of 1:100, 5:100 and 10:100 were used as catalysts. The effects of catalyst type, weight ratio, and the reaction time on carbon yield of SWCNTs were investigated. The statistical analyses showed that the 1:100 weight ratio of Co-MgO (60 min) had the highest carbon yield (55.99%). It was also found that the reaction time enhances the carbon efficiency of all catalysts whereas increase in weight ratio lowers the carbon efficiency for Fe, V, and Fe-Co; however the carbon efficiency of Co is not affected with change in weight ratio.