| 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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Amati, Matteo
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2023In situ study of electrochemical activation and surface segregation of the SOFC electrode material La0.75Sr0.25r0.5 Mn0.5O3±delta
- 2023Spatially‐Modulated Silicon Interface Energetics Via Hydrogen Plasma‐Assisted Atomic Layer Deposition of Ultrathin Aluminacitations
- 2022Synthesis and characterization of MWCNT-COOH/Fe3O4 and CNT-COOH/Fe3O4/NiO nanocomposites: assessment of adsorption and photocatalytic performancecitations
- 2020Atomic and electronic structure of a multidomain GeTe crystalcitations
- 2018Depth-Dependent Scanning Photoelectron Microspectroscopy Unravels the Mechanism of Dynamic Pattern Formation in Alloy Electrodepositioncitations
- 2017An in situ near-ambient pressure X-ray photoelectron spectroscopy study of CO2 reduction at Cu in a SOE cellcitations
- 2017Low temperature growth of fully covered single-layer graphene using a CoCu catalystcitations
- 2017Low temperature growth of fully covered single-layer graphene using a CoCu catalyst.
- 2017An in situ near-ambient pressure X-ray photoelectron spectroscopy study of CO 2 reduction at Cu in a SOE cellcitations
- 2016Fabrication of Ti substrate grain dependent C/TiO2 composites through carbothermal treatment of anodic TiO2citations
- 2015Tuning electronic properties of carbon nanotubes by nitrogen grafting: Chemistry and chemical stabilitycitations
- 2013Tubular Sn-filled carbon nanostructures on ITO: Nanocomposite material for multiple applicationscitations
- 2013Tubular Sn-filled carbon nanostructures on ITO: Nanocomposite material for multiple applicationscitations
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article
Tuning electronic properties of carbon nanotubes by nitrogen grafting: Chemistry and chemical stability
Abstract
<p>Plasma-based methods were used to graft nitrogen atoms to the hexagonal lattice of vertically aligned carbon nanotubes (v-CNTs). The nitrogen grafting (as pyridinic, pyrrolic and graphitic) was mediated by the creation of defects induced by energetic species present in the nitrogen plasma. We investigated the effect of adding nitrogen atoms via plasma treatment on the electronic properties of both v-CNT tips and sidewalls using ultraviolet and X-ray photoemission spectroscopy and spectromicroscopy. Site selective nitrogen grafting near the tips, up to a depth of 4 μm, was evaluated, beyond which the properties of the v-CNTs remain unperturbed. The N 1s XPS spectra recorded on the v-CNT tips showed three components related to nitrogen grafted as pyridinic, pyrrolic or graphitic. During thermal heating, we observed variations in the intensity ratio of these components due to the different thermal stability of the nitrogen grafting configurations; the most stable were the sp<sup>2</sup> pyridinic and graphitic nitrogen. The area ratio variation of these components was accompanied by a change in the density of states at the Fermi energy level, thus suggesting that the nitrogen functionalization strategy employed can be used to activate the v-CNT tips allowing the tuning of electronic properties by controlling the grafting of different nitrogen species.</p>