Improving Mass Transport and Charge Transfer in COF‐Based Photocatalysts With Three‐Dimensional Ordered Macropores for Benzylamine Oxidation and Hydrogen Evolution

. The 3DOM architecture confers 50-fold faster mass transport than bulk COFs, while the heterojunction facilitates directional charge separation and interface charge transfer. Density functional theory calculations confirm that the heterojunction optimizes reaction thermodynamics by lowering the potential energy barriers of BA activation. The work pioneers a template-concurrent synthesis paradigm, resolving COFs' critical pore engineering challenges.