Support materials based on converted aluminum films for chemical vapor deposition growth of single-wall carbon nanotubes

2003 ◽  
Vol 380 (1-2) ◽  
pp. 158-164 ◽  
Author(s):  
H. Hongo ◽  
F. Nihey ◽  
T. Ichihashi ◽  
Y. Ochiai ◽  
M. Yudasaka ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Single Wall Carbon Nanotubes ◽  
Chemical Vapor Deposition Growth ◽  
Aluminum Films ◽  
Single Wall Carbon ◽  
Support Materials

Correction to Interdependency of Gas Phase Intermediates and Chemical Vapor Deposition Growth of Single Wall Carbon Nanotubes

2011 ◽  
Vol 23 (6) ◽  
pp. 1636-1636 ◽  
Author(s):  
Bikau Shukla ◽  
Takeshi Saito ◽  
Shigekazu Ohmori ◽  
Mitsuo Koshi ◽  
Motoo Yumura ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Gas Phase ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Single Wall Carbon Nanotubes ◽  
Chemical Vapor Deposition Growth ◽  
Single Wall Carbon

Interdependency of Gas Phase Intermediates and Chemical Vapor Deposition Growth of Single Wall Carbon Nanotubes

2010 ◽  
Vol 22 (22) ◽  
pp. 6035-6043 ◽  
Author(s):  
Bikau Skukla ◽  
Takeshi Saito ◽  
Shigekazu Ohmori ◽  
Mitsuo Koshi ◽  
Motoo Yumura ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Gas Phase ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Single Wall Carbon Nanotubes ◽  
Chemical Vapor Deposition Growth ◽  
Single Wall Carbon

Purification of Single-Wall Carbon Nanotubes Synthesized from Alcohol by Catalytic Chemical Vapor Deposition

2004 ◽  
Vol 43 (No. 3B) ◽  
pp. L396-L398 ◽  
Author(s):  
Shingo Okubo ◽  
Takeshi Sekine ◽  
Shinzo Suzuki ◽  
Yohji Achiba ◽  
Kazuhito Tsukagoshi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon ◽  
Catalytic Chemical Vapor Deposition

scholarly journals Single wall carbon nanotubes growth over cobalt-iron mesoporous MCM-41 bimetallic catalyst under methane chemical vapor deposition, an experimental and DFT evaluation

2020 ◽  
Vol 25 (2) ◽  
pp. 227-246
Author(s):  
Frank Ramírez-Rodríguez ◽  
Betty López
Keyword(s):  
Activation Energy ◽  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Density Functional ◽  
Chemical Vapor ◽  
Photon Absorption ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon ◽  
Mcm 41

Cobalt and iron MCM-41 catalysts were synthesized through an in-situ incorporation process starting from commercial iron and cobalt nitrates. The incorporation was confirmed by diffuse reflectance UV spectroscopy (DRS-UV) inspecting the cobalt and iron silicate-like photon absorption features and comparing with pure MCM-41-Co and MCM-41-Fe catalysts. Additionally it was found that the incorporation of cobalt and iron does not compromise the mesoporous structure of MCM-41 as confirmed by N2 adsorption isotherms. All catalysts showed high surface areas (∼1100 m2g−1). Catalysts performance was conducted in a simple methane chemical vapor deposition (CVD) set up at 800 °C to produce single wall carbon nanotubes (SWCNT) under a constant flow of methane for 30 min. CVD products were characterized by thermogravimetric analysis (TGA) and Raman spectroscopy, finding that the iron content in the catalysts favors the selectivity and yield of graphitic-like structures, and confirming the presence of SWCNT by the appearance of a characteristic radial breathing mode (RBM) signals. These results were supported by Density Functional Theory (DFT) simulations of the methane dissociation (CH4 +TM → H3C –TMH) over Con (n = 1–5) and ComFe (m = 1–4), finding a different activation energy trend where ComFe (m = 1–4) clusters have the lower activation energy. The DFT study also revealed a charge difference (δC − δTM) higher in the case of dissociation over ComFe (m = 1–4) which may lead to an electrostatic stabilization of the transition metal, diminishing the activation energy of those clusters and leading to a faster carbon uptake.

scholarly journals Catalytic Chemical Vapor Deposition of Single-Wall Carbon Nanotubes at Low Temperatures

Nano Letters ◽  
2006 ◽  
Vol 6 (6) ◽  
pp. 1107-1112 ◽  
Author(s):  
Mirco Cantoro ◽  
Stephan Hofmann ◽  
Simone Pisana ◽  
Vittorio Scardaci ◽  
Atlus Parvez ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Low Temperatures ◽  
Chemical Vapor ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon ◽  
Catalytic Chemical Vapor Deposition
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