Vibrational spectra of CO and CO2 adsorbed on potassium modified Fe (100)
Yazarlar (1)
| Makale Türü | Özgün Makale (Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale) | ||
| Dergi Adı | Surface Science | ||
| Makale Dili | – | Basım Tarihi | 12-1989 |
| Cilt / Sayı / Sayfa | 224 / 1 / 348–358 | DOI | – |
| Makale Linki | https://www.sciencedirect.com/science/article/pii/0039602889909199 | ||
| UAK Araştırma Alanları |
Dedektör Teknolojisi
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| Özet |
| High resolution electron energy loss (EEL) spectra for CO adsorbed on potassium modified Fe(100) are presented. Five CO vibrational bands are clearly distinguishable. Two bands at or above 2000 cm−1 correspond to the α1− and α2−states on the clean surface. Two more bands, residing between 1450 and 1850 cm−1, reveal adsorption at potassium modified sites. The response of these bands to changes in potassium coverage and annealing temperature is highly predictable and similar to the situation on Fe(111) [1]. This suggests a local K: CO coordination. A fifth band is observed around 950 cm−1 and interpreted as CO adsorbed at potassium modified α3−sites, redshifted from 1200 cm−1 at unmofidied sites. The present results are complementary to a previous study of the same adsorption system utilizing photoemission spectroscopy and thermal desorption spectroscopy [2]. Finally, we present novel … |
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