Lowering the Cu-O bond energy in CuO nanocatalysts enhances the efficiency of NH₃ oxidation.

ABSTRACT: Tuning the electronic properties of nanocatalysts via doping with monodispersed hetero-metal atoms is an effective method used to enhance catalytic properties. Doping CuO nanoparticles with monodispersed Co atoms using different reductants affords catalysts (Co_BCu/Al₂O₃ and Co_HCu/Al₂O₃) with strikingly different electronic structures. Compared to Co_HCu/Al₂O₃, the CuO nanoparticles in Co_BCu/Al₂O₃ have longer and weaker Cu-O bonds, with a lower 1s → 4p_z antibonding transition and higher 4p → 1s bonding transition (as demonstrated from HERFD-XANES and valence-to-core X-ray emission spectroscopy). The weaker Cu-O bonds in Co_BCu/Al₂

SUBMITTER: Chen L 

PROVIDER: S-EPMC12552456 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature