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
Dündar Tekkaya, Ezgi and Karatepe, Nilgün (2015) 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. Fullerenes, Nanotubes and Carbon Nanostructures, 23 (6). pp. 535-541. ISSN 1536-383X (Print) 1536-4046 (Online)
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Official URL: http://dx.doi.org/10.1080/1536383X.2013.873030
The single wall carbon nanotubes (SWCNTs) were synthesized by catalytic chemical vapor deposition of C2H2 at 800°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.
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