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Chemphyschem. 2008 Jun 02;9(8):1189-94. doi: 10.1002/cphc.200800073.

Short-range interactions in Na coadsorption with CO and O on Ni(111).

Chemphyschem : a European journal of chemical physics and physical chemistry

Antonio Politano, Raffaele G Agostino, Vincenzo Formoso, Gennaro Chiarello

Affiliations

  1. Dipartimento di Fisica, Università degli Studi della Calabria via ponte Bucci, 87036 Rende, Italy.

PMID: 18442033 DOI: 10.1002/cphc.200800073

Abstract

The coadsorption of Na with CO and O on Ni(111) is studied by high-resolution electron energy loss spectroscopy. Experimental evidence for a very short-range interaction between Na and coadsorbates is reported, in contrast with recent theoretical predictions overestimating nonlocal alkali-induced effects. Loss spectra show distinct features, as a consequence of different local [CO]:[Na] and [O]:[Na] stoichiometries.

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