Intrinsic nanoparticle-single-atom interplays steering radical versus nonradical pathways in catalytic ozonation.

ABSTRACT: Compositional heterogeneity in metal/nitrogen-doped carbons (M-N-Cs) complicates the fundamental elucidation of the intricate interplay between the active metal species that rule the reactivity of single atomic catalysts (SACs). This study unveils the electronic disruptions of cobalt nanoparticles (Co NPs) to the catalytic behaviors of cobalt single-atom (Co SA). The intense electronic communications between high-density Co NPs and Co SA sites lead to dissociation O₃ on the high-spin Co SA sites to generate surface-confined hydroxyl radicals (^•OH). However, the tandem electron transfer yields superoxide radical (O₂^•-) with low reactivity and remarkably reduce ozone utilization efficiency (OUE). In contrast, independent Co SA sites far or free fro

SUBMITTER: Liu Y 

PROVIDER: S-EPMC12491479 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature