Influence of Copper Valence in CuO_x/TiO₂ Catalysts on the Selectivity of Carbon Dioxide Photocatalytic Reduction Products.

ABSTRACT: The Cu cocatalyst supported on the surface of TiO₂ photocatalysts has demonstrated unique activity and selectivity in photocatalytic CO₂ reduction. The valence state of copper significantly influences the catalytic process; however, due to the inherent instability of copper's valence states, the precise role of different valence states in CO₂ reduction remains inadequately understood. In this study, CuO_x/TiO₂ catalysts were synthesized using an in situ growth reduction method, and we investigated the impact of various valence copper species on CO₂ photocatalytic reduction. Our results indicate that Cu⁺ and Cu⁰ serve as primary active sites, with the selectivity for CH₄ and CO products during

SUBMITTER: Ni S 

PROVIDER: S-EPMC11643810 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature