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Matériaux fonctionnels carbonés
(12) Production(s) de l'année 2023
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Carbon Nanotube Mechanical Resonator With Mass Sensitivity of 70 Yoctogram at Room Temperature 
Auteur(s): Basset C., Tran H.-N., Desgarceaux Rudy, Lecarlate-Fernandez Benjamin, Pashayev S., Jabbarov Rasim, Alibert E., Jelinek R., Jourdain V., Lhermerout R., Henn F., Noury A.
(Affiches/Poster)
NT23: The 23rd International conference on the Science and Applications of Nanotubes and Low-Dimensional Materials (Arcachon, FR), 2023-06-04
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Strongly Emitting Folic Acid-Derived Carbon Nanodots for One- and Two-Photon Imaging of Lyotropic Myelin Figures
Auteur(s): Benkowska-Biernacka Dominika, Mucha S., Firlej L., Formalik F., Bantignies J.-L., Anglaret E., Samoć Marek, Matczyszyn Katarzyna
(Article) Publié:
Acs Appl. Mater. Interfaces, vol. p. (2023)
Texte intégral en Openaccess : 
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Contribution to the Percolation Threshold Study of Silicon Carbide Filled Polydimethylsiloxane Composites Used For Field Grading Application
Auteur(s): Metz R. , Merini Hocine, Reboul Jean-Michel, Bantignies J.-L., Hassanzadeh Mehrdad
(Article) Publié:
Silicon, vol. 15 p.5297–5305 (2023)
Texte intégral en Openaccess :
Ref HAL: hal-04118312_v1
DOI: 10.1007/s12633-023-02424-4
Exporter : BibTex | endNote
Résumé: Nonlinear V-I characteristics of particulate composite prepared from dispersion of silicon carbide in a siloxane elastomer have been measured as a function of filler concentration up to the maximum allowable of about 32 vol.%. Two critical concentrations (percolation thresholds) are obtained at volume fractions of about 17 and 24 vol.% for low and high electric fields. These values are consistent with the critical concentrations predicted by the theory: 14 and 31 vol.% respectively and may come from edge and face contacts between SiC semi-conducting particles.
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Long-term stable solid concentrated graphene dispersion assisted by a highly aromatic ionic liquid
Auteur(s): Aldroubi Soha, Anglaret E., Bou Malham Ibrahim, Hesemann Peter, Brun Nicolas, Mehdi Ahmad
(Article) Publié:
Journal Of Colloid And Interface Science, vol. 636 p.668-676 (2023)
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Core–Shell Multiwalled Carbon Nanotube/Cobalt Corrole Hybrids for the Oxygen Reduction Reaction
Auteur(s): Julliard Paul-Gabriel, Hanana Manel, Alvarez L., Cornut Renaud, Jousselme Bruno, Canard Gabriel, Campidelli Stéphane
(Article) Publié:
Energy Fuels, vol. 37 p.684-692 (2023)
Texte intégral en Openaccess : 
Ref HAL: hal-03926750_v1
DOI: 10.1021/acs.energyfuels.2c03434
Exporter : BibTex | endNote
Résumé: The development of hybrid nanomaterials that preserve and combine the properties of their constituents is a central issue of nanosciences. Herein, we describe the polymerization via CuAAC (copper-catalyzed azide-alkyne cycloaddition) of cobalt(III) corroles around conductive carbon nanotubes to produce chemically robust hybrid catalysts for Oxygen Reduction Reaction (ORR). A combination of techniques including UV-Vis-NIR absorption, Raman and X-ray Photoelectron Spectroscopy (XPS) as well as Scanning Electron Microscopy (SEM) were used to characterize the assembly of the two parts of the functional hybrid system for which the activity and the selectivity toward the ORR process in acidic media are enlightened by a combination of Rotating Disk Electrode (RDE) and Rotating Ring Disk Electrode (RRDE) measurements. The polymerized hybrid (click MWNT-CoCorr) exhibits an overpotential of ca. 230 mV compared to a reference platinum ink; the number of electrons involved in the reduction of oxygen is close to 3 in acidic media demonstrating that the corrole cobalt centers in the hybrids reduce oxygen via a mix of 2 and 4 electrons pathways.
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