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- W4281710257 abstract "Abstract Nanostructures with specific crystallographic planes display distinctive physico-chemical properties because of their unique atomic arrangements, resulting in widespread applications in catalysis, energy conversion or sensing. Understanding strain dynamics and their relationship with crystallographic facets have been largely unexplored. Here, we reveal in situ, in three-dimensions and at the nanoscale, the volume, surface and interface strain evolution of single supported platinum nanocrystals during reaction using coherent x-ray diffractive imaging. Interestingly, identical { hkl } facets show equivalent catalytic response during non-stoichiometric cycles. Periodic strain variations are rationalised in terms of O 2 adsorption or desorption during O 2 exposure or CO oxidation under reducing conditions, respectively. During stoichiometric CO oxidation, the strain evolution is, however, no longer facet dependent. Large strain variations are observed in localised areas, in particular in the vicinity of the substrate/particle interface, suggesting a significant influence of the substrate on the reactivity. These findings will improve the understanding of dynamic properties in catalysis and related fields." @default.
- W4281710257 created "2022-06-13" @default.
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- W4281710257 date "2022-05-30" @default.
- W4281710257 modified "2023-10-18" @default.
- W4281710257 title "Imaging the facet surface strain state of supported multi-faceted Pt nanoparticles during reaction" @default.
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- W4281710257 doi "https://doi.org/10.1038/s41467-022-30592-1" @default.
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