Selective micropollutant degradation via nanoconfined core-shell heterostructures with robust resilience to water matrices.

ABSTRACT: The increasing presence of emerging organic micropollutants in water systems poses a significant threat to global water security, yet their selective degradation within complex real water matrices remains a critical challenge. Here, we report the rational design of a TiO₂/C₂N core-shell photocatalyst that leverages a type II heterostructure-induced built-in electric field to create nanoconfined catalytic sites on the TiO₂ surface. The C₂N shell selectively allows micropollutants and free chlorine (as an oxidant) to access these catalytic sites while blocking natural organic matter (NOM) via size exclusion and repelling anions through electrostatic interactions, thereby facilitating the selective degradation of micropollutants. The TiO₂

SUBMITTER: He S 

PROVIDER: S-EPMC12722726 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature