Spectroscopic Study of the Fermi Level Electronic Structure of Single-Walled Carbon Nanotubes

Nano Letters ◽  
2002 ◽  
Vol 2 (2) ◽  
pp. 155-159 ◽  
Author(s):  
M. E. Itkis ◽  
S. Niyogi ◽  
M. E. Meng ◽  
M. A. Hamon ◽  
H. Hu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Structure ◽  
Fermi Level ◽  
Spectroscopic Study ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Selective Synthesis of Single-Walled Carbon Nanotubes by Blending Catalysts

2007 ◽  
Author(s):  
Shuhei Inoue ◽  
Takeshi Nakajima ◽  
Kazuya Nomura ◽  
Yoshihiro Kikuchi
Keyword(s):  
Carbon Nanotubes ◽  
Fermi Level ◽  
Chemical Vapor ◽  
Single Walled Carbon Nanotubes ◽  
Diameter Distribution ◽  
Efficient Catalyst ◽  
Single Walled Carbon ◽  
Similar Density ◽  
Walled Carbon Nanotubes ◽  
Diameter Distributions

Single-walled carbon nanotubes are considered the most attractive material and a lot of synthesis processes are developed. Among these synthesis processes chemical vapor deposition processes are considered to be most suitable for macroscopic production. In many CVD processes the alcohol catalytic CVD process can be the best process because it can produce very pure nanotubes without any purification. However, cobalt is essential as a catalyst that makes the flexibility of catalysts restricted. In this paper, our investigation mainly focused on as follows: The efficiency of combined catalysts with/without cobalt. The diameter distributions against catalysts density. The electrical states of catalysts near Fermi level. Consequently, almost all of cobalt containing catalysts worked well, and the diameter distributions were proportional to the particle size. Efficient catalysts had enough states around Fermi level and the cobalt-less efficient catalyst cluster model showed the similar density of state to the cobalt cluster. Thus, noticing to the DOS, other efficient catalysts can be discovered and the diameter distribution will be controllable by adjusting temperature, a catalyst size, and a catalyst combination without any complicated techniques and facilities.

scholarly journals A spectroscopic study of the fluorination and defluorination reactions on single-walled carbon nanotubes

2002 ◽  
Vol 4 (11) ◽  
pp. 2278-2285 ◽  
Author(s):  
Pierre R. Marcoux ◽  
Joachim Schreiber ◽  
Patrick Batail ◽  
Serge Lefrant ◽  
Joël Renouard ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Spectroscopic Study ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes
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