Harmonizing the cyano-group and Na to enhance selective photocatalytic O₂ activation on carbon nitride for refractory pollutant degradation.

ABSTRACT: Manipulating exciton dissociation and charge-carrier transfer processes to selectively generate free radicals of more robust photocatalytic oxidation capacity for mineralizing refractory pollutants remains challenging. Herein, we propose a strategy by simultaneously introducing the cyano-group and Na into graphitic carbon nitride (CN) to obtain CN-Cy-Na, which makes the charge-carrier transfer pathways the dominant process and consequently achieves the selective generation of free radicals. Briefly, the cyano-group intensifies the local charge density of CN, offering a potential well to attract the hole of exciton, which accelerates the exciton dissociation. Meanwhile, the separated electron transfers efficiently under the robust built-in electric field induced by the cyano-group and Na, a

SUBMITTER: Xu M 

PROVIDER: S-EPMC10962954 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature