Abstract
Recently there has been some controversy about CO adsorption on platinum, with some researchers supporting the Blyholder model and others saying that corrections are needed. We have used UV/HREELS to examine the electronic structure of adsorbed CO to distinguish between the various models. We have found that the 5σ to 2π* triplet peak shifts from 6.2 to 5.6 eV upon adsorption while the 5σ to 2π* singlet peak shifts from 8.3 to 8.2 eV. Both peaks also broaden, as expected from the Blyholder model. A comparison of these results to previous calculations shows that only Hückel calculations predict a shift that is within 0.5 eV of the experimental shift. Most of the previous calculations predict shifts that are in the wrong direction.
Original language | English (US) |
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Pages (from-to) | 144-149 |
Number of pages | 6 |
Journal | Surface Science |
Volume | 419 |
Issue number | 2-3 |
DOIs | |
State | Published - Jan 4 1999 |
Keywords
- Ab initio quantum chemical calculations
- Carbon monoxide
- Electron energy loss spectroscopy
- Platinum
- UV-spectroscopy
- UV/HREELS
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry