[PDF] Top 20 High specific surface area carbon nanotubes from catalytic chemical vapor deposition process
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High specific surface area carbon nanotubes from catalytic chemical vapor deposition process
... A carbon nanotube specimen with a carbon content of 83 ...a specific surface area equal to 790 m rg Ž corresponding to 948 m rg of carbon is prepared by a catalytic ... Voir le document complet
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High specific surface area carbon nanotubes from catalytic chemical vapor deposition process
... A carbon nanotube specimen with a carbon content of 83 ...a specific surface area equal to 790 m rg Ž corresponding to 948 m rg of carbon is prepared by a catalytic ... Voir le document complet
7
Hydrogen Storage in High Surface Area Carbon Nanotubes Produced by Catalytic Chemical Vapor Deposition
... migrate from their carbon shells and coalesce to form micrometer-sized spheres, leaving behind empty carbon ...the carbon shells which surrounds them even if there is no oxidation of the ... Voir le document complet
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Hydrogen Storage in High Surface Area Carbon Nanotubes Produced by Catalytic Chemical Vapor Deposition
... double-walled nanotubes (Figure ...derived from the measurements of 128 individual CNTs for each sample on high- resolution TEM images, are shown in Figure ... Voir le document complet
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Catalytic chemical vapor deposition synthesis of single- and double-walled carbon nanotubes from α-(Al1−xFex)2O3 powders and self-supported foams
... corundum (a) form which occurs during the H 2 –CH 4 reduction step. Thus, the aim of this paper is to investigate a new way to prepare a-alumina–hematite starting materials. This will in- volve the preparation of ... Voir le document complet
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(Mg,Co)O Solid-Solution Precursors for the Large-Scale Synthesis of Carbon Nanotubes by Catalytic Chemical Vapor Deposition
... In this article, we report results on the effect of varying the fuel content on the phase and microstructure of Mg 1–x Co x O solid solutions. Analogous to the findings of Zhang and Stangle, we find that stoichiometric ... Voir le document complet
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Kinetic critical temperature and optimized chemical vapor deposition growth of carbon nanotubes
... arise from processes at the single nanotube level or from the collective effects of many ...collective process of interest is the degree to which diffusion through the forest limits growth [5,27–30] ... Voir le document complet
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Large scale production of multi-walled carbon nanotubes by fluidized bed catalytic chemical vapor deposition : a parametric study
... MWNT from three different batches grown at 650°C during 120 min (Table ...deducted from TGA analysis coupled with SEM/EDX analysis of the residue obtained after reacting the composite powders with air at ... Voir le document complet
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Carbon nanotubes synthesis by the ethylene chemical catalytic vapour deposition (CCVD) process on Fe, Co, and Fe-Co/Al2O3 sol-gel catalysts
... at high pressure near ...ranging from 2 to 50 ...deviation from the straight line (not shown). The specific surface areas are high and increase after ...the specific ... Voir le document complet
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Plasma deposition—Impact of ions in plasma enhanced chemical vapor deposition, plasma enhanced atomic layer deposition, and applications to area selective deposition
... PECVD process, anyone of these but the desorption reaction (iv) can be involved in a deposition ...PECVD process as ...during deposition, as opposed to etching. Indeed, a too high ... Voir le document complet
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Vertically aligned carbon nanotubes black coatings from roll-to- roll deposition process
... aligned carbon nanotubes are tubular nanostructures made of graphitic carbon (carbon nanotubes) grown on a substrate with their axis perpendicular to the ...These nanotubes ... Voir le document complet
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Fe/Co Alloys for the Catalytic Chemical Vapor Deposition Synthesis of Single- and Double-Walled Carbon Nanotubes (CNTs). 1. The CNT−Fe/Co−MgO System
... different from those of the SWNTs and ...temperature high enough for them to catalyze the decom- position of CH 4 and the subsequent formation of ... Voir le document complet
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Fe/Co Alloys for the Catalytic Chemical Vapor Deposition Synthesis of Single- and Double-Walled Carbon Nanotubes (CNTs). 2. The CNT−Fe/Co−MgAl2O4 System
... 1.8 mm/s (see Figure 1c) is insignificant and can be attributed to an artifact of the fitting procedure. In view of the preceding, this would imply that the ferric cations prefer only one type of coordination. According ... Voir le document complet
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Origin of area selective plasma enhanced chemical vapor deposition of microcrystalline silicon
... PECVD process using the SiF 4 precursor, no trace of any Si layer was observed near the surface (there is only the protective layer, which is a carbon layer deposited prior to the FIB fabrication of ... Voir le document complet
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The Dynamics of the Nucleation, Growth and Termination of Single-Walled Carbon Nanotubes from in situ Raman Spectroscopy During Chemical Vapor Deposition
... diameter nanotubes was ...sampling area. At the same time, because RBMs are more difficult to detect at high-temperatures, we were not able to see the many RBMs that are readily detected at room ... Voir le document complet
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Phases of Carbon Nanotube Growth and Population Evolution from in Situ Raman Spectroscopy during Chemical Vapor Deposition
... temperatures. Chemical processes usually run faster at high temperatures, so this suggests that processes that prevent carbon from being properly incorporated into the crystalline lattice of ... Voir le document complet
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One-step chemical vapor deposition synthesis and supercapacitor performance of nitrogen-doped porous carbon–carbon nanotube hybrids
... The specific capacitance of CN x materials decreases with the in- creasing the scan rate of the potential (Figure 7b) because the ions have no time for diffusion inside the material and can only easily adsorb on ... Voir le document complet
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One-step chemical vapor deposition synthesis and supercapacitor performance of nitrogen-doped porous carbon–carbon nanotube hybrids
... The specific capacitance of CN x materials decreases with the in- creasing the scan rate of the potential (Figure 7b) because the ions have no time for diffusion inside the material and can only easily adsorb on ... Voir le document complet
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Fluidized bed chemical vapor deposition of copper nanoparticles on multiwalled carbon nanotubes
... varying surface morphologies from very smooth to very rough, with sometimes the presence of protrusions ( ...MWCNT surface, as it can be seen in Fig. 3 c. These nano-pits are observed from the ... Voir le document complet
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Large-scale synthesis of single-wall carbon nanotubes by catalytic chemical vapor deposition (CCVD) method
... single-wall carbon nanotubes SWNTs is ...by catalytic decomposition of methane over well-dispersed metal particles supported on MgO at ...easily from the support by a simple acidic treatment ... Voir le document complet
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