The reactivity of adsorbed Na atoms probed by coadsorbed CH3OH
Yazarlar (3)
| Makale Türü | Özgün Makale (Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale) | ||
| Dergi Adı | Surface science | ||
| Makale Dili | – | Basım Tarihi | 10-1984 |
| Cilt / Sayı / Sayfa | 146 / 1 / 43–60 | DOI | – |
| Makale Linki | https://www.sciencedirect.com/science/article/pii/0039602884902279 | ||
| UAK Araştırma Alanları |
Dedektör Teknolojisi
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| Özet |
| The chemical properties of sodium atoms adsorbed on a Cu(111) surface have been probed by coadsorbed methanol. Methoxide, stoichiometrically close to CH3ONa2, is identified as a product by photoemission spectroscopy. Sodium atoms are found to react in the same manner at all submonolayer coverages, i.e. independent of atomic charge. Films of closely packed Na atoms — the first sp-metal substrate probed by methanol — are slightly less reactive. Hartree-Fock-Slater cluster calculations as well as observed energy shifts of a Cu electronic surface state indicate a transfer of charge from the copper substrate to the methoxide group. The desorption temperature for a monolayer of methanol molecules from a Cu(111) surface is enhanced by the presence of low sodium concentrations (1 20 of a monolayer). CH3OH is found to adsorb associatively on the uncovered Cu(111) surface. |
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