Solar-driven defluorination via hydroxyl radical spillover for complete mineralization of organofluorine pollutants without fluoride byproducts.

ABSTRACT: The recalcitrance of fluorinated organic pollutants-featuring robust Csp²-F and Csp³-F bonds-poses critical challenges to aquatic ecosystems due to their extreme persistence and bioaccumulation. Whereas current destruction strategies suffer from high energy consumption and non-selective, here we present a solar-powered mineralization strategy utilizing cerium oxide/mesoporous silica (CeO₂/mSiO₂) heterojunction photocatalysts for complete defluorination of organofluorine contaminants, including fluorinated e-waste, fluoro-antibiotics and perfluorinated surfactant. Under visible light irradiation, the optimized 5%CeO₂/mSiO₂ achieved 91.1 ± 3.2% octafluorobiphenyl (OFB) and 97.7 ± 2.8% fleroxacin (FLE) degradations within 6 h. Notably, the 'forever

SUBMITTER: Zheng L 

PROVIDER: S-EPMC12357893 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature