Custom‐Design of Strong Electron/Proton Extractor on COFs for Efficient Photocatalytic H 2 O 2 Production

Abstract The development of photocatalysts with continuous electron extraction and rapid proton transfer could kinetically accelerate the artificial photosynthesis, but remains a challenge. Herein, we report the topology‐guided synthesis of a high‐crystalline triazine covalent organic framework (COF) decorated by uniformly distributed polar oxygen functional groups (sulfonic group or carboxyl) as the strong electron/proton extractor for efficient photocatalytic H 2 O 2 production. It was found that the polarity‐based proton transfer as well as electron enrichment in as‐obtained COFs played a crucial role in improving the H 2 O 2 photosynthesis efficiency (i.e., with an activity order of sulfonic acid‐ (SO 3…