Operando X-ray Spectroscopy
The Operando X-ray Spectroscopy belongs to Environment Division (ENE) of PSI and is within a matrix organization responsible for the operation of the SuperXAS and Debye beamlines to LSF.
Scientific Highlights
Room-temperature carbon monoxide oxidation by oxygen over Pt-Al2O3 mediated by reactive platinum carbonates
A new possibility for the attainment of low-temperature oxidation of carbon monoxide is demonstrated. Here we report using time-resolved DRIFTS, XAS, and mass spectrometry a platinum carbonate-mediated mechanism for the room-temperature oxidation of carbon monoxide.
Superior Bifunctional Electrocatalytic Activity of Ba0.5Sr0.5Co0.8Fe0.2O3-δ/ Carbon Composite Electrodes: Insight into the Local Electronic Structure
Using XAS it was demonstrated that carbon acts as an activity booster for Ba0.5Sr0.5Co0.8Fe0.2O3 oxygen reduction and evolution electrocatalyst promoting change of cobalt oxidation state.
Catalytically Active and Spectator Ce3+ in Ceria-Supported Metal Catalysts
Using time-resolved resonant X-ray emission spectroscopy, we quantitatively correlated the initial rate of Ce3+ formation under transient conditions to the overall rate of CO oxidation under steady-state conditions and showed that ceria reduction is a kinetically relevant step in CO oxidation, whereas a fraction of Ce3+ was present as spectators.