Understanding the Role of Active Lattice Oxygen in CO Oxidation Catalyzed by Copper-Doped Mn₂O₃@MnO₂.

ABSTRACT: Although the hopcalite catalyst, primarily composed of manganese oxide and copper oxide, has been extensively studied for carbon monoxide (CO) elimination, there remains significant potential to optimize its structure and activity. Herein, Cu-doped Mn₃O₂@MnO₂ catalysts featuring highly exposed interfacial regions were prepared. The correlation between interfacial exposure and catalytic activity indicates that the interfacial region serves as the active site for CO catalytic oxidation. The characteristic adsorption of CO by Cu species significantly enhances the catalytic activity of the catalyst. And XPS and ICP-OES analyses reveal that Cu ions coexist in both the interlayer and lattice of δ-MnO₂. Furthermore, XPS analysis was employed to quantify

SUBMITTER: Zhang H 

PROVIDER: S-EPMC11858229 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature