Dynamic behaviour of platinum and copper dopants in gold nanoclusters supported on ceria catalysts
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in: Communications chemistry, Jahrgang 2023, Nr. 6, 277, 18.12.2023.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - Dynamic behaviour of platinum and copper dopants in gold nanoclusters supported on ceria catalysts
AU - Müller, Nicole
AU - Rares, Banu
AU - Loxha, Adea
AU - Schrenk, Florian
AU - Lindenthal, Lorenz
AU - Rameshan, Christoph
AU - Pittenauer, Ernst
AU - Llorca, Jordi
AU - Timoshenko, Janis
AU - Marini, Carlo
AU - Barrabés, Noelia
N1 - Publisher Copyright: © 2023, The Author(s).
PY - 2023/12/18
Y1 - 2023/12/18
N2 - Understanding the behaviour of active catalyst sites at the atomic level is crucial for optimizing catalytic performance. Here, the evolution of Pt and Cu dopants in Au25 clusters on CeO2 supports is investigated in the water-gas shift (WGS) reaction, using operando XAFS and DRIFTS. Different behaviour is observed for the Cu and Pt dopants during the pretreatment and reaction. The Cu migrates and builds clusters on the support, whereas the Pt creates single-atom active sites on the surface of the cluster, leading to better performance. Doping with both metals induces strong interactions and pretreatment and reaction conditions lead to the growth of the Au clusters, thereby affecting their catalytic behaviour. This highlights importance of understanding the behaviour of atoms at different stages of catalyst evolution. These insights into the atomic dynamics at the different stages are crucial for the precise optimisation of catalysts, which ultimately enables improved catalytic performance.
AB - Understanding the behaviour of active catalyst sites at the atomic level is crucial for optimizing catalytic performance. Here, the evolution of Pt and Cu dopants in Au25 clusters on CeO2 supports is investigated in the water-gas shift (WGS) reaction, using operando XAFS and DRIFTS. Different behaviour is observed for the Cu and Pt dopants during the pretreatment and reaction. The Cu migrates and builds clusters on the support, whereas the Pt creates single-atom active sites on the surface of the cluster, leading to better performance. Doping with both metals induces strong interactions and pretreatment and reaction conditions lead to the growth of the Au clusters, thereby affecting their catalytic behaviour. This highlights importance of understanding the behaviour of atoms at different stages of catalyst evolution. These insights into the atomic dynamics at the different stages are crucial for the precise optimisation of catalysts, which ultimately enables improved catalytic performance.
UR - http://www.scopus.com/inward/record.url?scp=85180245772&partnerID=8YFLogxK
U2 - 10.1038/s42004-023-01068-0
DO - 10.1038/s42004-023-01068-0
M3 - Article
VL - 2023
JO - Communications chemistry
JF - Communications chemistry
SN - 2399-3669
IS - 6
M1 - 277
ER -