Pt/Al₂O₃ Overcoated with Reactive Metal Oxides and Their Application to Catalytic Oxidation of Propane.

ABSTRACT: Inverse-structured metal-metal oxide materials-where the oxides are located on top of a different metal-can provide unique chemical properties. Here, a few layers of reactive metal oxides, including In₂O₃, MoO₃, Bi₂O₃, or TiO₂, are overcoated on Al₂O₃-supported Pt nanoparticles using atomic layer deposition (ALD). In contrast to prior work focusing on stabilizing metal surfaces or new mixed-valence nanoparticles, here the goal is to create new reactive surfaces and interfaces. The overcoating altered the Pt nanoparticle accessibility as measured by STEM, CO chemisorption, and CO DRIFTS. The reactivity of the overcoated materials is interrogated with temperature-programmed reduction in H₂, in

SUBMITTER: Han GH 

PROVIDER: S-EPMC12641361 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature