Breaking through water-splitting bottlenecks over carbon nitride with fluorination.

ABSTRACT: Graphitic carbon nitride has long been considered incapable of splitting water molecules into hydrogen and oxygen without adding small molecule organics despite the fact that the visible-light response and proper band structure fulfills the proper energy requirements to evolve oxygen. Herein, through in-situ observations of a collective C = O bonding, we identify the long-hidden bottleneck of photocatalytic overall water splitting on a single-phased g-C₃N₄ catalyst via fluorination. As carbon sites are occupied with surface fluorine atoms, intermediate C=O bonding is vastly minimized on the surface and an order-of-magnitude improved H₂ evolution rate compared to the pristine g-C₃N₄ catalyst and continuous O₂ evolution is ach

SUBMITTER: Wu J 

PROVIDER: S-EPMC9668818 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature