In this study, we demonstrate how atomically dispersed ionic platinum (Pt2 +)
on ceria (CeO2), which is already thermally stable, can be activated via steam treatment (at 750 °C) to simultaneously achieve the goals of low - temperature carbon monoxide (CO) oxidation activity while providing outstanding hydrothermal stability.
The first observation of hydrides both
on the surface and in the bulk of
ceria was important because it established that the bulk of the material also can participate in chemical reactions.