Catalytic ativities of single-atom catalysts for CO oxidation: Pt1/FeOxvs. Fe1/FeOx

Pt1/FeOx has higher catalytic activity for CO oxidation than that of the FeOx substrate alone because the regeneration of oxygen vacancies features a high activation barrier for desorption of a second CO2 molecule at the surface of Fe1/FeOx (i.e., the FeOx substrate).