Heterojunction and crystallinity-mediated charge separation in β-ketoenamine covalent organic frameworks for synergistically improved photocatalytic H 2 evolution

not only improves the light-harvesting ability but also dramatically stimulates the charge separation and migration efficiency in the TpBD-COF(h). This work paves the way for the further design and synthesis of efficient noble-metal-free COF-based catalysts for photocatalytic energy conversion.