Abstract
We observed four kinds of adsorbed NO molecules on Pt(9 9 7) at 11 K using infrared reflection absorption spectroscopy (IRAS). The peaks at 1690, 1484 and 1615 cm-1 are assigned to the N-O stretching modes of the on-top site and the hollow site on the terrace and the bridge site at the step, respectively. The 1385 cm-1 peak is observed below ∼70 K. We assign the 1385 cm-1 peak to the hollow site of the (1 1 1) microfacet at the step or the lower-terrace hollow site nearest to the step. By heating, site-to-site hopping to the more stable site occurs and the relative stability of four adsorption sites can be determined.
| Original language | English |
|---|---|
| Pages (from-to) | 3560-3563 |
| Number of pages | 4 |
| Journal | Surface Science |
| Volume | 600 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - 2006 Sep 15 |
Keywords
- Adsorption
- Infrared absorption spectroscopy
- Nitric monoxide
- Platinum
- Step surface
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry
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Tsukahara, N., Mukai, K., Yamashita, Y., & Yoshinobu, J. (2006). Search for adsorption potential energy minima of NO on Pt(9 9 7) at 11 K. Surface Science, 600(18), 3560-3563. https://doi.org/10.1016/j.susc.2006.01.060