Robust Covalent Organic Framework Photocatalysts for H 2 O 2 Production: Linkage Position Matters

Abstract Covalent organic frameworks (COFs) are promising photocatalysts for hydrogen peroxide (H 2 O 2 ) synthesis. However, the nature of organic polymers makes the balance between high activity and stability challenging. We demonstrate that the linkage position matters in the design of robust COF photocatalysts with durable high activity without sacrificial reagents. COFs with ortho‐ and para‐linkages ( o ‐COFs and p ‐COFs) were constructed by 1,3,5‐triformylphloroglucinol with benzene‐, pyridine‐, pyrazine‐orthodiamines and paradiamines. The pyrzaine‐containing o ‐COFs with two pyridinic nitrogen atoms exhibited a H 2 O 2 production rate of 4396 μmol g −1 h −1 together with long‐time continuous H 2 O 2…

• NS
  Natural Science Foundation of Shanghai

  Awards: 21ZR1467800, 21ZR1419500
• NN
  National Natural Science Foundation of China