| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Maurice, Jean-Luc
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Reducing two-level system dissipations in 3D superconducting Niobium resonators by atomic layer deposition and high temperature heat treatmentcitations
- 2024Reducing two-level systems dissipations in 3D superconducting niobium resonators by atomic layer deposition and high temperature heat treatmentcitations
- 2023Reactive plasma sputtering deposition of polycrystalline GaN thin films on silicon substrates at room temperaturecitations
- 2023Evolution of Cu-In Catalyst Nanoparticles under Hydrogen Plasma Treatment and Silicon Nanowire Growth Conditionscitations
- 2020Hydrogen Plasma-Assisted Growth of Gold Nanowirescitations
- 2019Heteroepitaxial growth of silicon on GaAs via low-temperature plasma-enhanced chemical vapor depositioncitations
- 2018Heteroepitaxial growth of Silicon on GaAs via low temperature plasma-enhanced chemical vapor deposition
- 2016Low temperature plasma enhanced CVD epitaxial growth of silicon on GaAs: a new paradigm for III-V/Si integrationcitations
- 2012Different mechanisms of graphene wall nucleation on Fe and Ni particles
- 2011Vertically oriented nickel nanorod/carbon nanofiber core/shell structures synthesized by plasma-enhanced chemical vapor depositioncitations
- 2011Iron catalysts for the growth of carbon nanofibers : Fe, Fe_{3}C$ or both?
- 2011Synthesis of few-layered graphene by ion implantation of carbon in nickel thin filmscitations
- 2010Iron catalyst for the growth of carbon nanofibers: Fe, Fe3C or both?citations
- 2010Nickel catalyst faceting in plasma-enhanced direct current chemical vapor deposition of carbon nanofibers
- 2006Interfaces in {100} epitaxial heterostructures of perovskite oxidescitations
Places of action
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article
Iron catalyst for the growth of carbon nanofibers: Fe, Fe3C or both?
Abstract
International audience ; Iron is a widely used catalyst for the growth of carbon nanotubes (CNTs) or carbon nanofibers (CNFs) by catalytic chemical vapor deposition. However, both Fe and Fe-C compounds (generally, Fe3C) have been found to catalyze the growth of CNTs/CNFs, and a comparison study of their respective catalytic activities is still missing. Furthermore, the control of the crystal structure of iron-based catalysts, that is α-Fe or Fe3C, is still a challenge, which not only obscures our understanding of the growth mechanisms of CNTs/CNFs, but also complicates subsequent procedures, such as the removal of catalysts for better industrial applications. Here, we show a partial control of the phase of iron catalysts (α-Fe or Fe3C), obtained by varying the growth temperatures during the synthesis of carbon-based nanofibers/nanotubes in a plasma-enhanced chemical vapor deposition reactor. We also show that the structure of CNFs originating from Fe3C is bamboo-type, while that of CNFs originating from Fe is not. Moreover, we directly compare the growth rates of carbon-based nanofibers/nanotubes during the same experiments and find that CNFs/CNTs grown by α-Fe nanoparticles are longer than CNFs grown from Fe3C nanoparticles. The influence of the type of catalyst on the growth of CNFs is analyzed and the corresponding possible growth mechanisms, based on the different phases of the catalysts, are discussed.