Core–Shell Multiwalled Carbon Nanotube/Cobalt Corrole Hybrids for the Oxygen Reduction Reaction

Autor: Paul-Gabriel Julliard, Manel Hanana, Laurent Alvarez, Renaud Cornut, Bruno Jousselme, Gabriel Canard, Stéphane Campidelli
Přispěvatelé: Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE UMR 3685), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Innovation en Chimie des Surfaces et NanoSciences (LICSEN UMR 3685), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Laboratoire Charles Coulomb (L2C), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), GDR Mapyro, ANR-14-JTIC-0002,MECANO,Ingenierie moléculaire et assemblages contrôlés de nanoobjets fonctionnels à base de porphyrines(2014), ANR-10-LABX-0035,Nano-Saclay,Paris-Saclay multidisciplinary Nano-Lab(2010)
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Energy & Fuels
Energy & Fuels, 2023, 37 (1), pp.684-692. ⟨10.1021/acs.energyfuels.2c03434⟩
ISSN: 0887-0624
1520-5029
Popis: International audience; 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.
Databáze: OpenAIRE
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