Facet-dependent adsorbate-mediated strong metal-support interaction in Ni/TiO₂.

ABSTRACT: Despite the growing significance of adsorbate-mediated strong metal-support interaction (A-SMSI) in various catalytic processes, a comprehensive mechanistic understanding of its formation and effective strategies for its precise modulation remain elusive. Herein, by constructing three well-defined model Ni/TiO₂ catalysts with distinct exposed facets, we directly visualize a facet-dependent A-SMSI behavior in CO₂ hydrogenation via in situ environmental transmission electron microscopy (ETEM) at the atomic level. The in situ results reveal distinct formation behaviors of TiO_2-x overlayers: complete, partial, and no encapsulation of Ni nanoparticles (NPs) on the {100}, {101}, and {001} TiO₂ facets, respectively. Complementary in situ diffuse reflect

SUBMITTER: Gao L 

PROVIDER: S-EPMC12848050 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature