Synthesis of carbon nanotubes
CCVD synthesis of carbon nanotubes with W/Co–MgO catalysts
... addition of tungsten was at the ori- gin of the increase in the carbon quantity (from ...intensity of the (0 0 2) car- bon peak with increasing W/Co ratio ( ...formation of ...
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Synthesis of carbon nanotubes-Fe-Al2O3 powders.Influence of the characteristics of the starting Al1.8Fe0.2O3 oxide solid solution
... web of filaments covering the matrix grains, which explains that the powders retain the shape of the reduction vessel when transferred to a storage ...bundles of C NTs ...
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From ceramic–matrix nanocomposites to the synthesis of carbon nanotubes
... spectra of the Fe/Co– (table 4) and Fe/Ni–MgAl2O4 (table 5) powders obtained after reduction at 700, 800, 900 and 1000 ◦ C were recorded at 9 ...spectra of FeCoR800 (a), FeCoR1000 (b), FeNiR800 (c, e) and ...
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From ceramic-matrix nanocomposites to the synthesis of carbon nanotubes
... spectra of the Fe/Co– (table 4) and Fe/Ni–MgAl2O4 (table 5) powders obtained after reduction at 700, 800, 900 and 1000 ◦ C were recorded at 9 ...spectra of FeCoR800 (a), FeCoR1000 (b), FeNiR800 (c, e) and ...
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Synthesis of carbon nanotubes–Fe–Al2O3 powders.Influence of the characteristics of the starting Al1.8Fe0.2O3 oxide solid solution
... web of filaments covering the matrix grains, which explains that the powders retain the shape of the reduction vessel when transferred to a storage ...bundles of C NTs ...
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Synthesis of oxy-hydroxyfluorinated anatase nanoparticles grown on carbon nanotubes
... stabilization of oxy-hydroxyfluorinated anatase, we used the pair distribution function ...PDF of the composite containing 10 wt.% of o-CNTs was successfully fitted using the anatase type structural ...
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Carbon nanotubes–Fe–alumina nanocomposites. Part I: influence of the Fe content on the synthesis of powders
... bundles of Iijima's- type carbon nanotubes and that the surface Fe or Fe carbide particles are covered by a few graphene ...state of these 2 wt% Fe ...tens of nanometers ...network ...
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Carbon nanotubes-Fe-alumina nanocomposites. Part I: influence of the Fe content on the synthesis of powders
... bundles of Iijima's- type carbon nanotubes and that the surface Fe or Fe carbide particles are covered by a few graphene ...state of these 2 wt% Fe ...tens of nanometers ...network ...
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Large-scale synthesis of single-wall carbon nanotubes by catalytic chemical vapor deposition (CCVD) method
... production of single-wall carbon nanotubes SWNTs is ...quantities of SWNTs can be synthesised by catalytic decomposition of methane over well-dispersed metal particles supported on MgO ...
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Large-scale synthesis of single-wall carbon nanotubes by catalytic chemical vapor deposition (CCVD) method
... production of single-wall carbon nanotubes SWNTs is ...quantities of SWNTs can be synthesised by catalytic decomposition of methane over well-dispersed metal particles supported on MgO ...
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Synthesis of single-walled carbon nanotube-Co-MgO composite powders and extraction of the nanotubes
... number of walls ...one of the largest observed MWNT, with an internal diameter of ...side of the tube [upper side in ...amorphous carbon is present on the tube surface. Since amorphous ...
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Synthesis of single-walled carbon nanotube–Co–MgO composite powders and extraction of the nanotubes
... number of walls ...one of the largest observed MWNT, with an internal diameter of ...side of the tube [upper side in ...amorphous carbon is present on the tube surface. Since amorphous ...
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A new fast method for ceramic foam impregnation: Application to the CCVD synthesis of carbon nanotubes
... consists of a few tens of micrometers veil-like agglomerates with a specific surface area of ...adhesion of an alumina deposit on a honeycomb ceramic is greatly improved by a slurry composed ...
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Metal nanoparticles for the catalytic synthesis of carbon nanotubes
... size of the catalytic particle found attached to the tube ...dence of SWT produced by preformed catalytic ...observations of SWT formed by the arc-discharge and laser-vaporization processes in which ...
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In situ CCVD synthesis of carbon nanotubes within a commercial ceramic foam
... and carbon nanofibres, but the latter in a much smaller proportion than for ...growth of the metal nanoparticles is obviously easier when more of them are formed at the surface of the oxide ...
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In situ CCVD synthesis of carbon nanotubes within a commercial ceramic foam
... amount of (NH 4 ) 6 Mo 7 O 24 ?4H 2 O as well as citric ...capacity of the Pyrex ...remove carbon residues ...sake of comparison, a pure MgO powder was synthesised by the same ...
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Controlled growth of Ni nanocrystals on SrTiO$_3$ and their application in the catalytic synthesis of carbon nanotubes
... out of the UHV chamber and transferred into an atmospheric chemical vapour deposition (CVD) system, where ethanol-CVD (EtOH-CVD) was performed at a variety of growth ...growth of CNTs can be found in ...
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Catalytic CVD Synthesis of Double and Triple-walled Carbon Nanotubes by the Control of the Catalyst Preparation
... The synthesis of carbon nanotubes (CNTs) with a controlled number of walls is an important ...Most of the work has first focused on single-walled CNTs (SWNTs) because of ...
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Metal nanoparticles for the catalytic synthesis of carbon nanotubes
... presence of ca. 1% of metal atoms in the vapour produces dramatic ...the carbon cluster and migrate to the dangling bonds at the carbon cluster edge, inhibiting closure of the fullerene ...
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Synthesis of carbon nanotubes/hydroxyapatite composites using catalytic methane cracking
... cracking of methane and the methane conversion reached only 4% at 700 ...decomposition of methane compared to pure Ca-HA. At 700 °C, a methane conversion of 40% was ...activity of nickel-doped ...
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