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Projekt Druckansicht

Oxygen reduction at chalcogenide model surfaces

Fachliche Zuordnung Physikalische Chemie von Festkörpern und Oberflächen, Materialcharakterisierung
Förderung Förderung von 2010 bis 2015
Projektkennung Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 184693688
 
Erstellungsjahr 2017

Zusammenfassung der Projektergebnisse

The surface chemistry of Se modified surface is very rich, but also rather complicated. STM results were very helpful not only for the analysis of the atomic structure of an adsorbed Se monolayer on Rh(111), but also for the understanding the coverage and potential dependent structural changes including place exchange. Unfortunately, in the limited time (and with only one PhD student) we were not yet able to establish a reliable method to determine the number of free Ru sites on a heat treated Rh surface or the surface Se concentration. Such surfaces seem to have interesting catalytic activities: not only is the oxygen reduction shifted by 80 mV in positive direction (which is still far from the activity of Pt), but also the hydrogen evolution and oxidation of adsorbed CO resembles that of Pt. I believe we laid the basis for future necessary research on this topic.

Projektbezogene Publikationen (Auswahl)

 
 

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