The interaction of CO and O2 with the (111) surface of Pt3Ti
Yazarlar (4)
| Makale Türü | Özgün Makale (Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale) | ||
| Dergi Adı | Surface Science | ||
| Makale Dili | – | Basım Tarihi | 11-1986 |
| Cilt / Sayı / Sayfa | 177 / 1 / 121–138 | DOI | – |
| Makale Linki | https://www.sciencedirect.com/science/article/pii/0039602886902621 | ||
| UAK Araştırma Alanları |
Dedektör Teknolojisi
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| Özet |
| The electronic properties of clean and partly oxidized Pt3Ti(111) surfaces have been studied utilizing carbon monoxide both as a probe and as a reducing agent. Vibrational frequencies and desorption profiles of chemisorbed CO as well as ion scattering and angular resolved X-ray photoelectron spectroscopy (XPS) suggest that the first atomic layer of annealed Pt3Ti(111) is quasi-pure platinum. Scarcely any (θ ≈ 0.01) dissociation of CO was observed. Minor shifts of vibrational frequencies and desorption temperatures compared to Pt(111) and a p(2 × 2) “reconstruction” of the clean surface reveal some influence of the bulk. Auger spectroscopy, XPS, and ion scattering all show an increased titanium signal as a result of oxidation. Surface bound atomic oxygen gives a vibrational band around 650 cm−1 which coincides with infrared absorption spectra of TiO2. Flashing with CO shifts the band to 500 cm−1 … |
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