Metal-Oxide Interface Sites Created Using Atomic Layer Deposition and Tested for CO Oxidation.

ABSTRACT: The performance of catalysts made out of Pt supported on TiO₂ thin films grown on SBA-15 (a silica mesoporous material) by atomic layer deposition (ALD) was characterized systematically by combining in situ infrared absorption spectroscopy (IR) with other techniques including electron microscopy and adsorption-desorption isothermal measurements. The titania films in the resulting high-surface-area catalysts were evenly distributed throughout the inner surface of the SBA-15 mesopores, and their thickness could be controlled at a submonolayer level, with 3 to 4 TiO₂ ALD cycles needed for the complete coverage of the silica sites. The titania films could be deposited either before or after adding the metal (Pt), which was dispersed in the form of small nanoparticles (NPs

SUBMITTER: Ke W 

PROVIDER: S-EPMC12281565 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature