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- W4306755529 abstract "Abstract Nanoparticle (NP) catalysts are ubiquitous in energy systems, chemical production, and reducing the environmental impact of many industrial processes. Under reactive environments, the availability of catalytically active sites on the NP surface is determined by its dynamic structure. However, atomic-scale insights into how a NP surface reconstructs under reaction conditions and the impact of the reconstruction on catalytic activity are still lacking. Using operando transmission electron microscopy, we show that Pd NPs exhibit periodic round–to–flat transitions altering their facets during CO oxidation reaction at atmospheric pressure and elevated temperatures. This restructuring causes spontaneous oscillations in the conversion of CO to CO 2 under constant reaction conditions. Our study reveals that the oscillatory behavior stems from the CO-adsorption-mediated periodic restructuring of the nanocatalysts between high-index-faceted round and low-index-faceted flat shapes. These atomic-scale insights into the dynamic surface properties of NPs under reactive conditions play an important role in the design of high-performance catalysts." @default.
- W4306755529 created "2022-10-19" @default.
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- W4306755529 date "2022-10-19" @default.
- W4306755529 modified "2023-10-16" @default.
- W4306755529 title "Periodic structural changes in Pd nanoparticles during oscillatory CO oxidation reaction" @default.
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- W4306755529 doi "https://doi.org/10.1038/s41467-022-33304-x" @default.
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