scholarly journals Establishing the most favorable metal–carbon bond strength for carbon nanotube catalysts

2015 ◽  
Vol 3 (14) ◽  
pp. 3422-3427 ◽  
Author(s):  
Fredrik Silvearv ◽  
Peter Larsson ◽  
Sarah. L. T. Jones ◽  
Rajeev Ahuja ◽  
J. Andreas Larsson
Keyword(s):  
Chemical Vapor Deposition ◽  
Carbon Nanotube ◽  
Transition Metals ◽  
Bond Strength ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Carbon Bond ◽  
Wide Range ◽  
Potential Carbon

We have studied a wide range of transition metals to find potential carbon nanotube (CNT) catalysts for chemical vapor deposition (CVD) production.

RETRACTED - Growth of single-walled carbon nanotube at a low temperature by alcohol catalytic chemical vapor deposition using Ru catalysts

MRS Advances ◽  
2018 ◽  
Vol 3 (1-2) ◽  
pp. e1-e7 ◽  
Author(s):  
Takayuki Fujii ◽  
Takuya Okada ◽  
Takahiro Saida ◽  
Shigeya Naritsuka ◽  
Takahiro Maruyama
Keyword(s):  
Chemical Vapor Deposition ◽  
Carbon Nanotube ◽  
Vapor Deposition ◽  
High Vacuum ◽  
Chemical Vapor ◽  
Single Walled Carbon Nanotube ◽  
Ru Catalysts ◽  
Catalytic Chemical Vapor Deposition ◽  
Single Walled Carbon ◽  
Wide Range

ABSTRACTGrowth of single-walled carbon nanotube (SWCNT) was achieved by an alcohol catalytic chemical vapor deposition (CVD) mechanism that was conducted in a high vacuum using Ru catalysts. By optimizing the ethanol pressure, SWCNTs can grow in a wide range of temperature between 500 °C and 900 °C. Both the yield and crystalline quality of SWCNTs reached their maxima at 700 °C. Significantly, the SWCNT growth was achieved even at 450 °C, which was much lower than the growth temperatures that were required for SWCNT growth using Ru catalysts previously. Raman measurements exhibited that the diameter distribution of the SWCNTs that were grown at 450 °C was quite narrow and (11, 4) nanotubes were dominant. The observations of transmission electron microscope (TEM) suggested that the size of the Ru particles were larger than the diameter of SWCNT. Such a relation was similar to the relation observed in the growth of SWCNTs using Pt catalysts.

Growth of single-walled carbon nanotube at a low temperature by alcohol catalytic chemical vapor deposition using Ru catalysts

MRS Advances ◽  
2018 ◽  
Vol 3 (1-2) ◽  
pp. 53-59 ◽  
Author(s):  
Takayuki Fujii ◽  
Takuya Okada ◽  
Takahiro Saida ◽  
Shigeya Naritsuka ◽  
Takahiro Maruyama
Keyword(s):  
Chemical Vapor Deposition ◽  
Carbon Nanotube ◽  
Vapor Deposition ◽  
High Vacuum ◽  
Chemical Vapor ◽  
Single Walled Carbon Nanotube ◽  
Ru Catalysts ◽  
Catalytic Chemical Vapor Deposition ◽  
Single Walled Carbon ◽  
Wide Range

ABSTRACTGrowth of single-walled carbon nanotube (SWCNT) was achieved by an alcohol catalytic chemical vapor deposition (CVD) mechanism that was conducted in a high vacuum using Ru catalysts. By optimizing the ethanol pressure, SWCNTs can grow in a wide range of temperature between 500 °C and 900 °C. Both the yield and crystalline quality of SWCNTs reached their maxima at 700 °C. Significantly, the SWCNT growth was achieved even at 450 °C, which was much lower than the growth temperatures that were required for SWCNT growth using Ru catalysts previously. Raman measurements exhibited that the diameter distribution of the SWCNTs that were grown at 450 °C was quite narrow and (11, 4) nanotubes were dominant. The observations of transmission electron microscope (TEM) suggested that the size of the Ru particles were larger than the diameter of SWCNT. Such a relation was similar to the relation observed in the growth of SWCNTs using Pt catalysts.

Highly Efficient Field Emission from Carbon Nanotube−Nanohorn Hybrids Prepared by Chemical Vapor Deposition

ACS Nano ◽  
2010 ◽  
Vol 4 (12) ◽  
pp. 7337-7343 ◽  
Author(s):  
Ryota Yuge ◽  
Jin Miyawaki ◽  
Toshinari Ichihashi ◽  
Sadanori Kuroshima ◽  
Tsutomu Yoshitake ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Carbon Nanotube ◽  
Field Emission ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Highly Efficient
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