Nontronites as catalyst for synthesis of carbon nanotubes by catalytic chemical vapor deposition.

2015 ◽  
Vol 114 ◽  
pp. 170-178 ◽  
Author(s):  
Štefan Kavecký ◽  
Jana Valúchová ◽  
Mária Čaplovičová ◽  
Stefan Heissler ◽  
Pavol Šajgalík ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Catalytic Chemical Vapor Deposition ◽  
Synthesis Of Carbon Nanotubes

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
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Synthesis Temperature ◽  
Laser Raman Spectroscopy ◽  
Catalytic Chemical Vapor Deposition ◽  
Laser Raman ◽  
Synthesis Of Carbon Nanotubes

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.

scholarly journals Fluidized bed catalytic chemical vapor deposition synthesis of carbon nanotubes—A review

2009 ◽  
Vol 155 (1-2) ◽  
pp. 37-48 ◽  
Author(s):  
Firoozeh Danafar ◽  
A. Fakhru’l-Razi ◽  
Mohd Amran Mohd Salleh ◽  
Dayang Radiah Awang Biak
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Fluidized Bed ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Catalytic Chemical Vapor Deposition ◽  
Synthesis Of Carbon Nanotubes

Chirality-selective synthesis of carbon nanotubes by catalytic-chemical vapor deposition using quasicrystal alloys as catalysts

2009 ◽  
Vol 224 (1-2) ◽  
Author(s):  
Kazuo Kajiwara ◽  
Shogo Suzuki ◽  
Hideki Sato ◽  
Koicho Hata
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Alloy System ◽  
Electron Microscopic ◽  
Cross Sectional ◽  
Catalytic Chemical Vapor Deposition ◽  
Vertically Aligned ◽  
Synthesis Of Carbon Nanotubes

AbstractWe study ultrathin quasicrystalline (QC) films as catalysts for the synthesis of carbon nanotubes (CNTs). To optimize the conditions for the synthesis of CNTs with single chirality, it is important to understand the effects of the catalyst on the chirality-selectivity. Among QC alloys found so far, an icosahedral Al–Cu–Fe alloy system with fivefold symmetry was tested for a catalyst in the synthesis of CNTs by alcohol catalytic-chemical vapor deposition (CCVD). Cross-sectional scanning electron microscopic images of the samples revealed that vertically-aligned CNTs were synthesized reproducibly. It implies that QC films have a significant catalytic activity for the synthesis of CNTs. Moreover, preliminary results of chirality-selectivity are obtained by means of resonance Raman scattering. It is suggested that Al–Cu–Fe ultrathin films are useful for the preferential synthesis of armchair-type CNTs, that is, QC nanoclusters play an important role as catalyst in alcohol CCVD.

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