Insights into excitonic behavior in single-atom covalent organic frameworks for efficient photo-Fenton-like pollutant degradation.

ABSTRACT: The generation of radicals through photo-Fenton-like reactions demonstrates significant potential for remediating emerging organic contaminants (EOCs) in complex aqueous environments. However, the excitonic effect, induced by Coulomb interactions between photoexcited electrons and holes, reduces carrier utilization efficiency in these systems. In this study, we develop Cu single-atom-loaded covalent organic frameworks (Cu_SA/COFs) as models to modulate excitonic effects. Temperature-dependent photoluminescence and ultrafast transient absorption spectra reveal that incorporating acenaphthene units into the linker (Cu_SA/Ace-COF) significantly reduces exciton binding energy (E_b). This modification not only enhances peroxymonosulfate adsorption at Cu active site

SUBMITTER: Zhu C 

PROVIDER: S-EPMC11742440 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature