Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 144, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4939527
Keywords
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Funding
- Cluster of Excellence Engineering of Advanced Materials
- HZB
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We investigated the adsorption and reaction of pyridine on flat Pt(111) and stepped Pt(355) surfaces via high-resolution in situ x-ray photoelectron spectroscopy. The surfaces were exposed to pyridine at temperatures between 112 and 300 K while simultaneously recording XP spectra. Subsequently, the crystals were annealed and the temperature dependencies of the N 1s and C 1s core levels were studied again in a continuous and quantitative way. Various surface species were found, namely, physisorbed, flat-lying and end-on pyridine, a-pyridyl species on the terraces and on the steps and several unidentified high temperature species. We were able to show an influence of the steps of Pt(355) by pre-adsorbing silver next to the step, which selectively suppresses the step adsorption. (C) 2016 AIP Publishing LLC.
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