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- W2043930207 abstract "The nucleation of noble metal nanoparticles on oxide surfaces can lead to dramatic enhancements in catalytic activity that are related to the atomic-scale formation of the nanoparticles and interfaces. For the case of submonolayer Pt deposited on the 2×1 SrTiO(3)(001) surface atomic-force microscopy shows the formation of nanoparticles. We use X-ray standing wave (XSW) atomic imaging to show that these nanoparticles are composed of Pt face-centered-cubic nanocrystals with cube-on-cube epitaxy laterally correlated to the substrate unit cell. The phase sensitivity of the XSW allows for a direct measurement of the interface offset between the two unit cells along the c-axis. Different Pt coverages lead to differences in the observed XSW image of the interfacial structure, which is explained by a proposed model based on the Pt-Pt interaction becoming stronger than the Pt-substrate interaction as the global coverage is increased from 0.2 to 0.6 ML." @default.
- W2043930207 created "2016-06-24" @default.
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- W2043930207 creator A5054485067 @default.
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- W2043930207 date "2011-11-02" @default.
- W2043930207 modified "2023-09-23" @default.
- W2043930207 title "Atomic Imaging of Oxide-Supported Metallic Nanocrystals" @default.
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- W2043930207 doi "https://doi.org/10.1021/nn203273e" @default.
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