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- W2972648021 abstract "Oxygen adsorption on Pt-induced nanowires on Ge(001) (NWs/Ge(001)) was investigated on the atomic scale. At 77 K, we observed two disparate features based on scanning tunneling microscopy images and scanning tunneling spectroscopy measurements. Combining our experimental observations with density functional theory calculation results, we assign the oxygen adsorption states to the physisorption feature between adjacent NW dimers with van der Waals interactions and molecularly chemisorbed species above NW dimers through the formation of peroxy bonds. Detailed analysis reveals that the reactivity of NW atoms toward oxygen adsorption is attributable to the constituent Ge and Pt atoms during gas–solid interfacial reaction: Pt electronic modification renders the dangling bond of the Ge dimer less reactive during oxygen adsorption; and the unbuckled geometry further hinders charge transfer from the Ge NW atom to oxygen. The results will shed light on the fundamental understanding of the oxidation mechanism." @default.
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- W2972648021 date "2019-01-01" @default.
- W2972648021 modified "2023-09-24" @default.
- W2972648021 title "Unveiling Oxygen Adsorption States on One-Dimensional Pt-Induced Nanowires on Ge(001)" @default.
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