Department of Chemistry2024-12-2920240021-951710.1016/j.jcat.2024.1156772-s2.0-85199861871https://doi.org/10.1016/j.jcat.2024.115677https://hdl.handle.net/20.500.14288/22643In this study, we prepared a Pt/CeO2/Cu(1 2 /Cu(1 1 1) model catalyst and investigated CO and CO2 2 adsorption using infrared reflection absorption spectroscopy (IRRAS) and temperature-programmed desorption (TPD) techniques to gain insight into the interaction between Pt nanoparticles and the CeO2 2 support surface. Our observations revealed that the deposition of CeO2 2 at 700 K results in island formation on the Cu(1 1 1) surface, whereas at 520 K it leads to a more continuous film formation. Reducing the CeO2/Cu(1 2 /Cu(1 1 1) surface enhances the CO and CO2 2 uptakes on CeO2. 2 . Pt nanoparticles deposited on these surfaces remained in a metallic form, and during CO desorption, they facilitate the oxidation of CO to form CO2 2 by utilizing lattice oxygen from the interface between them and CeO2. 2 .ChemistryPhysical chemistryEngineeringChemical engineeringJournal article1090-26941287490000001Q140771