Controlled O2 reduction at a mixed-valent (II,I) Cu2S core

Jordan Mangue; Clément Gondre; Jacques Pécaut; Carole Duboc; Stéphane Ménage; Stéphane Torelli

doi:10.1039/D0CC03987J

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Controlled O₂ reduction at a mixed-valent (II,I) Cu₂S core†

Jordan Mangue,^a Clément Gondre,^a Jacques Pécaut,^b Carole Duboc,

^c Stéphane Ménage

^a and Stéphane Torelli

*^a

Author affiliations

* Corresponding authors

^a Univ. Grenoble Alpes, CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
E-mail: stephane.torelli@cea.fr

^b Univ. Grenoble Alpes, CEA, CNRS, IRIG, SYMMES, UMR 5819 Equipe Chimie Interface Biologie pour l’Environnement, la Santé et la Toxicologie, 38054 Grenoble Cedex 9, France

^c Univ. Grenoble Alpes, Département de Chimie Moléculaire, 301 rue de la chimie, 38054 Grenoble Cedex 9, France

Abstract

Inspection of Oxygen Reduction Reactions (ORRs) using a mixed-valent Cu₂S complex as a pre-catalyst revealed a tuneable H₂O₂vs. H₂O production under mild conditions by controlling the amount of sacrificial reducer. The fully reduced bisCu^I state is the main active species in solution, with fast kinetics. This new catalytic system is robust for H₂O₂ production with several cycles achieved and opens up perspectives for integration into devices.

This article is part of the themed collections: Biohybrid approaches for energy conversion and Bioinspired metal complexes for chemical transformations and catalysis

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Article information

DOI: https://doi.org/10.1039/D0CC03987J
Article type: Communication
Submitted: 07 Jun 2020
Accepted: 16 Jul 2020
First published: 16 Jul 2020

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Chem. Commun., 2020,56, 9636-9639

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Controlled O₂ reduction at a mixed-valent (II,I) Cu₂S core

J. Mangue, C. Gondre, J. Pécaut, C. Duboc, S. Ménage and S. Torelli, Chem. Commun., 2020, 56, 9636 DOI: 10.1039/D0CC03987J

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Chemical Communications