Covalent Organic Cage‐Based Photocatalysts for Highly Efficient and Selective H 2 O 2 Production

ABSTRACT Photocatalysts are key to sustainable hydrogen peroxide (H 2 O 2 ) production, yet most reported systems are polymeric or composite, with limited solubility and poorly defined architectures that obscure mechanistic understanding and structure–function relationships. Here we present covalent organic superphane cages bearing secondary amine, tertiary amine, or ammonium functionalities as discrete, metal‐free photocatalysts for H 2 O 2 generation. Among them, the tied tertiary amine derivative ( SUPE‐ptz‐2 ) exhibits enhanced light absorption, efficient charge carrier separation and transfer, and precisely organized redox‐active sites. As a result, SUPE‐ptz‐2 achieves an H 2 O 2 production rate of 11,089…

• NN
  National Natural Science Foundation of China

  Award: 22371068
• FR
  Fundamental Research Funds for Central Universities of the Central South University