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Spectroscopic link between adsorption site occupation and local surface chemical reactivity | | A Baraldi
; S Lizzit
; G Comelli
; M Kiskinova
; R Rosei
; K Honkala
; J K Nørskov
; | | Date: |
23 Jul 2004 | | Journal: | Phys Rev Lett, 93 (4), 046101 | | Abstract: | In this Letter we show that sequences of adsorbate-induced shifts of surface core level (SCL) x-ray photoelectron spectra contain profound information on surface changes of electronic structure and reactivity. Energy shifts and intensity changes of time-lapsed spectral components follow simple rules, from which adsorption sites are directly determined. Theoretical calculations rationalize the results for transition metal surfaces in terms of the energy shift of the d-band center of mass and this proves that adsorbate-induced SCL shifts provide a spectroscopic measure of local surface reactivity. | | Source: | PubMed, pmid15323775 | | Services: | Forum | Review | Favorites | |
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