Operando X-Ray Absorption Spectroscopy reveals different Hydrogen dissociation pathways on model Cu:CeO2 and Fe:CeO2 surfaces
The doping of metal oxides is a valuable route to increase catalyst activity and lower activation temperatures in H2 dissociation to replace Pt in catalysts for electrochemical devices. In this study, we observed that Cu doping promotes CeO2 reduction, while the addition of Fe seems to have a limited impact on the oxide chemical reactivity only at low temperatures.