CO and O2 Interaction with Kinked Pt Surfaces

Title	CO and O2 Interaction with Kinked Pt Surfaces
Authors	Fernando García-Martínez, Elia Turco, Frederik Schiller, J. Enrique Ortega
Magazine	ACS Catalysis
Date	04/10/2024
DOI	https://doi.org/10.1021/acscatal.4c00435
Introduction	This study analyses the chemical reactions between carbon monoxide (CO) and oxygen (O2) at kinked platinum surfaces using a specially designed Pt sample. We investigate the CO oxidation process, focusing on the CO-covered/poisoned and O-covered/active phases. Through high-resolution X-ray photoemission, we identify and quantify terrace and kink species, revealing structural and chemical variations across different crystal planes. We observe CO adsorption preferences at step edges and increased O coverage on kinked planes. These findings suggest enhanced reactivity and higher ignition temperatures for CO oxidation at kinked surfaces compared to terraces.
Quote	Fernando García-Martínez, Elia Turco and Frederik Schiller et al. CO and O2 Interaction with Kinked Pt Surfaces. ACS Catal. 2024. Vol. 14(8):6319-6327. DOI: 10.1021/acscatal.4c00435
Element	Oxygen (O) , Platinum (Pt)