Engineering charge transfer by tethering halogens to covalent organic frameworks for photocatalytic sacrificial hydrogen evolution.

ABSTRACT: Covalent organic frameworks (COFs) are promising versatile organic semiconductors for the photocatalytic hydrogen evolution reaction (HER) but usually rely on the utilization of expensive Pt species as the co-catalyst and exhibit inferior activity in seawater relative to that in pure water. Herein, different halogen atoms (F, Cl, and Br) were integrated into a COF to optimize the photochemical properties, carrier thermodynamics, and kinetics. The Cl-containing COF TpPaCl exhibited effective co-catalyst-free HER performance under visible light irradiation, with a high HER rate of 16.3 mmol g^-1 h^-1 in artificial seawater (11.5 mmol g^-1 h^-1 in real seawater), outperforming that in pure water. The remarkable performance came from the fine and efficie

SUBMITTER: Ma F 

PROVIDER: S-EPMC12168954 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature