Doped metal clusters as bimetallic AuCo nanocatalysts: insights into structural dynamics and correlation with catalytic activity by in situ spectroscopy.

ABSTRACT: Co-doped Au₂₅ nanoclusters with different numbers of doping atoms were synthesized and supported on CeO₂. The catalytic properties were studied in the CO oxidation reaction. In all cases, an enhancement in catalytic activity was observed compared to the pure Au₂₅ nanocluster catalyst. Interestingly, a different catalytic performance was obtained depending on the number of Co atoms within the cluster. This was related to the mobility of atoms within the cluster's structure under pretreatment and reaction conditions, resulting in active CoAu nanoalloy sites. The evolution of the doped Au clusters into nanoalloys with well-distributed Co atoms within the Au cluster structure was revealed by combined XAFS, DRIFTS, and XPS studies. Overall, these studies contrib

SUBMITTER: Barrabes N 

PROVIDER: S-EPMC9890489 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature