Comparative vibrational study on alkali coadsorption with CO and O on Ni(111) and Cu(111)

A Politano; V Formoso; G Chiarello

doi:10.1088/0953-8984/21/26/264006

Comparative vibrational study on alkali coadsorption with CO and O on Ni(111) and Cu(111)

J Phys Condens Matter. 2009 Jul 1;21(26):264006. doi: 10.1088/0953-8984/21/26/264006. Epub 2009 Jun 11.

Authors

A Politano¹, V Formoso, G Chiarello

Affiliation

¹ Dipartimento di Fisica Rende (Cs), Università degli Studi della Calabria, Italy.

PMID: 21828454
DOI: 10.1088/0953-8984/21/26/264006

Abstract

High-resolution electron energy loss spectroscopy was used to investigate alkali (Na, K) coadsorption with CO and O on Cu(111) and Ni(111). Measurements provided new insights in these systems. A CO-induced weakening of the alkali-substrate bond was revealed on both substrates. The effect is more pronounced for the Na+CO/Ni(111) system. Submonolayers of alkalis were found to promote the preferential population of the subsurface site for O/Cu(111) but not for O/Ni(111).