Temperature Effects on the Preparation of Multi-Walled Carbon Nanotubes by Floating Catalytic Chemical Vapor Deposition

2011 ◽  
Vol 264-265 ◽  
pp. 837-842
Author(s):  
Jin Cheng ◽  
Xiao Ping Zou

In this study, we report the synthesis of carbon nanotubes by floating catalytic chemical vapor deposition, which employs ferrocene as the catalyst precursors and ethanol as carbon source. We obtained massive deposits. The deposits were characterized by scanning electron microscopy, transmission electron microscopy, and visual laser Raman spectroscopy. We discussed the effects of synthesis temperature on the synthesis of carbon nanotubes by floating catalytic chemical vapor deposition. Our results indicated that the synthesis temperature could affect not only on the graphitization degree, but also on the aligned growth of carbon nanotubes and the diameter of carbon nanotubes.

2010 ◽  
Vol 123-125 ◽  
pp. 799-802 ◽  
Author(s):  
Jin Cheng ◽  
Xiao Ping Zou ◽  
Gang Qiang Yang ◽  
Xue Ming Lü ◽  
Cui Liu Wei ◽  
...  

In this study, we report the synthesis of carbon nanotubes by ethanol catalytic chemical vapor deposition, which employs ferrocene as the catalyst precursors and ethanol as carbon source. We obtained massive deposits. The deposits were characterized by scanning electron microscopy, transmission electron microscopy, and visual laser Raman spectroscopy. We discussed the effects of synthesis temperature on the synthesis of carbon nanotubes by floating catalytic chemical vapor deposition. Our results indicated that the synthesis temperature could affect not only on the graphitization degree, but also on the aligned growth of carbon nanotubes and the diameter of carbon nanotubes.


2004 ◽  
Vol 858 ◽  
Author(s):  
H. Emrah Unalan ◽  
Manish Chhowalla

ABSTRACTSingle-walled carbon nanotubes (SWNTs) were synthesized both in powder form and on substrates using alcohol catalytic chemical vapor deposition method (ACCVD). A detailed parametric study was conducted. As-grown SWNTs were analyzed using transmission electron microscopy (HRTEM), field-emission scanning electron microscopy (FE-SEM) and Raman spectroscopy. Nucleation and growth of SWNTs occurred within seconds after introduction of the alcohol vapor. The results show that high quality SWNTs with a narrow diameter distribution without amorphous carbon can be grown using Co acetate catalyst doped with Fe acetate above 750°C. Defective nanotubes were observed at low (450°C) and high (950°C) temperatures with the optimum temperature being 850°C. In brief, our work has taken a step towards optimizing SWNTs growth conditions using ACCVD.


2009 ◽  
Vol 155 (1-2) ◽  
pp. 37-48 ◽  
Author(s):  
Firoozeh Danafar ◽  
A. Fakhru’l-Razi ◽  
Mohd Amran Mohd Salleh ◽  
Dayang Radiah Awang Biak

2015 ◽  
Vol 114 ◽  
pp. 170-178 ◽  
Author(s):  
Štefan Kavecký ◽  
Jana Valúchová ◽  
Mária Čaplovičová ◽  
Stefan Heissler ◽  
Pavol Šajgalík ◽  
...  

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