In situ ligand-modulated activation of inert Ce(III/IV) into ozonation catalyst for efficient water treatment.

ABSTRACT: As a classic strategy to maximize catalytic activity, modulation of the electronic structure of central metal using organic ligands encounters great challenge in radical reactions exemplified by advanced oxidation processes (AOPs) due to operando destruction of employed ligands. Herein, we provide a paradigm achieving in situ ligand-modulated activation of the originally inert Ce(III/IV) for catalytic ozonation as a representative AOP widely applied in full-scale water treatment. Among the small-molecule carboxylates typically produced from pollutant degradation during ozonation, we find oxalate (OA) is a potent ligand to activate Ce(III/IV), inducing 11.5- and 5.8-fold elevation in rate constants of O₃ decomposition and atrazine degradation, respectively. The Ce(III)-OA complex

SUBMITTER: Zhang J 

PROVIDER: S-EPMC10467571 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature