Oxygen Storage at the Metal/Oxide Interface of Catalyst Nanoparticles

Abstract

Holding its breath: Small Pd particles on an Fe3O4 support reversibly store large quantities of oxygen in the form of a thin Pd oxide layer at the particle/support interface. Oxygen from this reservoir can be released during oxidation reactions, as shown by a combination of molecular beam methods, scanning tunneling microscopy, and photoelectron spectroscopy.