Reversible temperature-induced shape transition of Pt nanoparticles supported on Al₂O₃.

ABSTRACT: Supported platinum catalysts are widely used in industry for hydrogenation reactions. The variations of the electronic and geometric properties of Pt nanoparticles due to temperature can greatly affect their reactivity. In this work, we use in situ X-ray absorption spectroscopy and environmental transmission electron microscopy to study the effect of H₂ and temperature on the shape and electronic properties of 1.8 nm average diameter Pt nanoparticles supported on Al₂O₃. We utilize actively trained machine learning potentials with uniform acceptance force-bias Monte Carlo (fbMC) to estimate the structural distribution of Pt₁₅/γ-Al₂O₃ (110) clusters at finite temperatures. Our predicted cluster geometries are consistent

SUBMITTER: Pool Mazun R 

PROVIDER: S-EPMC12621133 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature