Morphology-controlled β-ketoenamine covalent organic frameworks for enhanced photocatalytic hydrogen production

Abstract

TpBd-COFs with different morphologies were synthesized by regulating the dynamic equilibrium of imine bonds using acetic acid as a modulator. The TpBd-COF nanosheet exhibits a higher photocatalytic H₂ evolution activity than the TpBd-COF nanowires due to the enhanced light-harvesting ability, optimized energy levels and facilitated electron transfer.