CO on Pt(111): TDS and ESD study |
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| Institution: | 1. Materials Science and Engineering, Graduate School of Science and Engineering, Koç University, Istanbul, Turkey;2. Koç University TÜPRAŞ Energy Center, Koç University, Istanbul, Turkey;3. Chemistry Department, Koç University, Istanbul, Turkey;4. SLAC National Accelerator Laboratory, Menlo Park, CA, USA |
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| Abstract: | Electron stimulated desorption of ionic species from CO adsorbed on Pt(111) has been studied and comparison made with EELS results. The “on-top” site which, according to EELS data, fills first is observed to yield O+ ion. The bridge adsorption site appears to release CO+ during electron bombardment. Coadsorption of H2 and CO was also examined and compared with the polycrystalline platinum case. Only very weak coadsorption effects are seen on the Pt(111) surface, as evidenced by presence of a weak low energy component associated with the O+ ESD energy distribution. |
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