TY - JOUR
T1 - Investigation of the Effect of Reaction Time, Weight Ratio, and Type of Catalyst on the Yield of Multi-Wall Carbon Nanotubes via Chemical Vapor Deposition of Acetylene
AU - Dündar-Tekkaya, Ezgi
AU - Karatepe, Nilgün
N1 - Publisher Copyright:
Copyright © Taylor & Francis Group, LLC.
PY - 2015/10/3
Y1 - 2015/10/3
N2 - The synthesis of multi-wall carbon nanotubes (MWCNTs) was studied using catalytic chemical vapor deposition of acetylene at 500°C for 30 and 60 min. Catalysts were prepared by impregnating Fe, Co, Ni, V, and bimetallic mixture of Fe-Co on MgO with a weight ratio of 1:100, 5:100, and 10:100. The effects of the reaction time, the type, and the weight ratio of the catalysts on the carbon yield of MWCNTs were investigated. Experimental results showed that the 10:100 weight ratio of Fe-Co:MgO had the highest carbon yield (81.97%) and the MWCNT to amorphous carbon ratio (100.6), whereas 10:100 V:MgO had the lowest carbon yield (8.44%). Statistical analyses indicated that increasing weight ratio enhanced the carbon efficiencies of Fe, Co, Fe-Co, and Ni catalyst; moreover, increasing the reaction time had a positive effect on the carbon efficiencies of Fe and V catalysts.
AB - The synthesis of multi-wall carbon nanotubes (MWCNTs) was studied using catalytic chemical vapor deposition of acetylene at 500°C for 30 and 60 min. Catalysts were prepared by impregnating Fe, Co, Ni, V, and bimetallic mixture of Fe-Co on MgO with a weight ratio of 1:100, 5:100, and 10:100. The effects of the reaction time, the type, and the weight ratio of the catalysts on the carbon yield of MWCNTs were investigated. Experimental results showed that the 10:100 weight ratio of Fe-Co:MgO had the highest carbon yield (81.97%) and the MWCNT to amorphous carbon ratio (100.6), whereas 10:100 V:MgO had the lowest carbon yield (8.44%). Statistical analyses indicated that increasing weight ratio enhanced the carbon efficiencies of Fe, Co, Fe-Co, and Ni catalyst; moreover, increasing the reaction time had a positive effect on the carbon efficiencies of Fe and V catalysts.
KW - Acetylene
KW - Catalyst
KW - Chemical vapor deposition
KW - Multi-wall carbon nanotubes
UR - http://www.scopus.com/inward/record.url?scp=84937780527&partnerID=8YFLogxK
U2 - 10.1080/1536383X.2015.1010641
DO - 10.1080/1536383X.2015.1010641
M3 - Article
AN - SCOPUS:84937780527
SN - 1536-383X
VL - 23
SP - 853
EP - 859
JO - Fullerenes Nanotubes and Carbon Nanostructures
JF - Fullerenes Nanotubes and Carbon Nanostructures
IS - 10
ER -