Unraveling the synergistic effects of Cu-Ag tandem catalysts during electrochemical CO 2 reduction using nanofocused X-ray probes.

Autor: Frisch ML; Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany., Wu L; Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany.; Alexander von Humboldt Foundation, Jean-Paul-Str. 12, 53173, Bonn, Germany., Atlan C; ESRF, The European Synchrotron, 71 Avenue des Martyrs, Grenoble, 38000, France.; CEA Grenoble, IRIG/MEM/NRX, Université Grenoble Alpes, Grenoble, 38054, France., Ren Z; Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22607, Hamburg, Germany., Han M; ESRF, The European Synchrotron, 71 Avenue des Martyrs, Grenoble, 38000, France., Tucoulou R; ESRF, The European Synchrotron, 71 Avenue des Martyrs, Grenoble, 38000, France., Liang L; Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany., Lu J; Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany., Guo A; Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany., Nong HN; Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany., Arinchtein A; Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany., Sprung M; Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22607, Hamburg, Germany., Villanova J; ESRF, The European Synchrotron, 71 Avenue des Martyrs, Grenoble, 38000, France., Richard MI; ESRF, The European Synchrotron, 71 Avenue des Martyrs, Grenoble, 38000, France.; CEA Grenoble, IRIG/MEM/NRX, Université Grenoble Alpes, Grenoble, 38054, France., Strasser P; Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany. pstrasser@tu-berlin.de.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2023 Nov 29; Vol. 14 (1), pp. 7833. Date of Electronic Publication: 2023 Nov 29.
DOI: 10.1038/s41467-023-43693-2
Abstrakt: Controlling the selectivity of the electrocatalytic reduction of carbon dioxide into value-added chemicals continues to be a major challenge. Bulk and surface lattice strain in nanostructured electrocatalysts affect catalytic activity and selectivity. Here, we unravel the complex dynamics of synergistic lattice strain and stability effects of Cu-Ag tandem catalysts through a previously unexplored combination of in situ nanofocused X-ray absorption spectroscopy and Bragg coherent diffraction imaging. Three-dimensional strain maps reveal the lattice dynamics inside individual nanoparticles as a function of applied potential and product yields. Dynamic relations between strain, redox state, catalytic activity and selectivity are derived. Moderate Ag contents effectively reduce the competing evolution of H 2 and, concomitantly, lead to an enhanced corrosion stability. Findings from this study evidence the power of advanced nanofocused spectroscopy techniques to provide new insights into the chemistry and structure of nanostructured catalysts.
(© 2023. The Author(s).)
Databáze: MEDLINE
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