scholarly journals Growth of Carbon Nanotube Forests on Carbon Fibers with a SiO2 Interlayer

2012 ◽  
Vol 1451 ◽  
pp. 97-102 ◽  
Author(s):  
Erica F. Antunes ◽  
Viviane Q. da Silva ◽  
Vagner E. C. Marques ◽  
Lilian Siqueira ◽  
Evaldo J. Corat
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Fibers ◽  
Multiwall Carbon Nanotubes ◽  
Protective Layer ◽  
Silica Layer ◽  
Vertical Alignment ◽  
Simple Method ◽  
Iron Diffusion ◽  
Carbon Nanotube Forests ◽  
Multiwall Carbon

ABSTRACTCeramic barriers avoid catalyst diffusion to produce better multiwall carbon nanotubes (CNT) on carbon fiber fabrics (CF). We developed a simple method to produce efficiently a silica layer from TEOS pyrolysis at similar conditions of CNT growth from camphor and ferrocene mixtures. This protective layer prevents iron diffusion and allows the vertical alignment of CNTs.

Functionalization of multiwall carbon nanotubes with nitrogen containing polyelectrolyte by a simple method

2015 ◽  
Vol 85 ◽  
pp. 155-159 ◽  
Author(s):  
Prabhsharan Kaur ◽  
Mun-Sik Shin ◽  
So-Ryong Chae ◽  
Moon-Sung Kang ◽  
Jin-Soo Park ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwall Carbon Nanotubes ◽  
Simple Method ◽  
Multiwall Carbon

Anisotropic thermal conductivity of polypropylene composites filled with carbon fibers and multiwall carbon nanotubes

2014 ◽  
Vol 36 (11) ◽  
pp. 1951-1957 ◽  
Author(s):  
Ilya Mazov ◽  
Igor Burmistrov ◽  
Igor Il'inykh ◽  
Andrey Stepashkin ◽  
Denis Kuznetsov ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Carbon Fibers ◽  
Multiwall Carbon Nanotubes ◽  
Polypropylene Composites ◽  
Anisotropic Thermal Conductivity ◽  
Multiwall Carbon

FORMATION OF CARBON NANOTUBES ON CARBON PAPER AND STAINLESS STEEL SCREEN BY OHMICALLY HEATING CATALYTIC SITES

2002 ◽  
Vol 01 (03n04) ◽  
pp. 223-234 ◽  
Author(s):  
X. SUN ◽  
R. LI ◽  
G. LEBRUN ◽  
B. STANSFIELD ◽  
J. P. DODELET ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Stainless Steel ◽  
Gas Phase ◽  
Carbon Fibers ◽  
Multiwall Carbon Nanotubes ◽  
Ni Catalyst ◽  
Carbon Paper ◽  
Catalytic Sites ◽  
Negative Effect ◽  
Multiwall Carbon

A newly designed gas phase thermal decomposition reactor, ohmically heating the catalytic sites, has been used to synthesize multiwall carbon nanotubes (MWCNTs) on carbon paper and stainless steel screen. Co-Ni catalyst particles were dispersed by a silane intermediate layer adsorbed onto the carbon fibers or the stainless steel threads of the supports. MWCNTs were obtained on both substrates by a tip grown mechanism. They are about 20 μm in length and 15–50 nm in diameter. A methanol pretreatment of the carbon fibers significantly increased the density of the tubes on the carbon paper, but the same treatment had a negative effect on stainless steel. The MWCNTs, which adhere firmly to the carbon paper and the stainless steel screen, may find applications as electrodes in fuel cells, sensors and in photonics.

scholarly journals Simple Method to Synthesize Functionalized Carbon Nanotubes Employing Cobalt Nitrate and Acetone by Using Spray Pyrolysis Deposition Technique

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Jorge A. Gómez ◽  
Alfredo Marquez ◽  
Antonino Pérez ◽  
A. Duarte-Moller
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Nature ◽  
Multiwall Carbon Nanotubes ◽  
Cobalt Nitrate ◽  
Deposition Technique ◽  
Simple Method ◽  
Functionalized Carbon Nanotubes ◽  
Spray Pyrolysis Deposition ◽  
Multiwall Carbon ◽  
Functionalized Multiwall Carbon Nanotubes

Recently alcohols and ketones have been employed to sensitize CNT by CVD. A study has shown the importance of the chemical nature of those carbon precursors on the characteristics of the CNT (carbon nanotubes) obtained. In the present work we show the influence of the catalyst employed on the synthesis of functionalized multiwall carbon nanotubes (MWCNTs) utilizing acetone as carbon source and cobalt nitrate Co(NO3)2as catalyst.

Simple method for the layer-by-layer surface modification of multiwall carbon nanotubes

Carbon ◽  
2011 ◽  
Vol 49 (6) ◽  
pp. 2039-2045 ◽  
Author(s):  
Chularat Iamsamai ◽  
Apinan Soottitantawat ◽  
Uracha Ruktanonchai ◽  
Supot Hannongbua ◽  
Stephan Thierry Dubas
Keyword(s):  
Carbon Nanotubes ◽  
Surface Modification ◽  
Multiwall Carbon Nanotubes ◽  
Layer By Layer ◽  
Layer Surface ◽  
Simple Method ◽  
Multiwall Carbon

Growth of Carbon Nanotubes on Surface of Carbon Fibers Rod

2006 ◽  
Vol 317-318 ◽  
pp. 259-262 ◽  
Author(s):  
Yun Soo Lim ◽  
Woo Sik Kim ◽  
Sook Young Moon ◽  
Dong Yun Han ◽  
Jin Yong Lee
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Fibers ◽  
Vapor Deposition ◽  
Multiwall Carbon Nanotubes ◽  
Chemical Vapor ◽  
Chemical Vapor Deposition Method ◽  
Deposition Method ◽  
Experimental Conditions ◽  
Fe Catalysts ◽  
Multiwall Carbon

The growth of carbon nanotubes (CNTs) from surface of carbon fibers rods (CFRs) as used supports is under investigation using the Fe-catalytic chemical vapor deposition method. TEM studies indicate that under the experimental conditions Fe catalysts on CFRs produces mostly bundles of multiwall carbon nanotubes (MWCNTs). SEM results show the best presence of bundles of MWCNTs for Fe catalysts of 6.5 mol % at 800°C.

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