Crystalline oxygen-bridged carbon nitride from self-assembled supramolecular intermediate for efficient photocatalytic H2 evolution

Crystalline O-bridging carbon nitride is constructed via a self-assembled heptazine-based supramolecular intermediate, of which the HER is approximately 23.2 times than that of pristine BCN, and the AQE is achieved at 13.2% at 420 nm.