scholarly journals Catalytic Chemical Vapor Deposition Synthesis of Carbon Aerogels of High-Surface Area and Porosity

2012 ◽  
Vol 2012 ◽  
pp. 1-5
Author(s):  
Armando Peña ◽  
Julio Puerta ◽  
Aimé Guerrero ◽  
Edgar Cañizales ◽  
Joaquín L. Brito
Keyword(s):  
Electron Microscopy ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Carbon Nanostructures ◽  
Iron Carbide ◽  
Chemical Vapor ◽  
Carbon Aerogels ◽  
Chemical Vapor Deposition Method ◽  
Catalytic Chemical Vapor Deposition ◽  
Catalytic Material

In this work carbon aerogels were synthesized by catalytic chemical vapor deposition method (CCVD). Ferrocene were employed as a source both of catalytic material (Fe) and of carbon. Gaseous hydrogen and argon were used as reductant and carrier gas, respectively. The products of reaction were collected over alumina. The morphology and textural properties of the soot produced in the reaction chamber were investigated using Scanning Electron Microscopy, High-Resolution Transmission Electron Microscopy, X-ray photoelectron spectroscopy, and N2physisorption (BET and BHJ methods). After the evaluation of the porous structure of the synthesized products, 780 ± 20 m2/g ofSBETand 0.55 ± 0.02 cm3/g ofVBJHwere found. The presence of iron carbide and the partial oxidation of carbon nanostructures were revealed by XPS.

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.

Fabrication of PTFE thin films by dual catalytic chemical vapor deposition method

2008 ◽  
Vol 516 (5) ◽  
pp. 687-690 ◽  
Author(s):  
Hiroaki Yasuoka ◽  
Masahiro Yoshida ◽  
Ken Sugita ◽  
Keisuke Ohdaira ◽  
Hideyuki Murata ◽  
...  
Keyword(s):  
Thin Films ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Chemical Vapor Deposition Method ◽  
Deposition Method ◽  
Catalytic Chemical Vapor Deposition

High-pressure catalytic chemical vapor deposition of ferromagnetic ruthenium-containing carbon nanostructures

2012 ◽  
Vol 14 (6) ◽  
Author(s):  
Vyacheslav O. Khavrus ◽  
E. M. M. Ibrahim ◽  
Alicja Bachmatiuk ◽  
Mark H. Rümmeli ◽  
A. U. B. Wolter ◽  
...  
Keyword(s):  
High Pressure ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Carbon Nanostructures ◽  
Chemical Vapor ◽  
Catalytic Chemical Vapor Deposition

scholarly journals Parametric Study of Single-Walled Carbon Nanotubes Using Alcohol Catalytic Chemical Vapor Deposition

2004 ◽  
Vol 858 ◽  
Author(s):  
H. Emrah Unalan ◽  
Manish Chhowalla
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Parametric Study ◽  
Chemical Vapor ◽  
Single Walled Carbon Nanotubes ◽  
Catalytic Chemical Vapor Deposition ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

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.

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