Covalent organic frameworks for direct photosynthesis of hydrogen peroxide from water, air and sunlight

Abstract Solar-driven photosynthesis is a sustainable process for the production of hydrogen peroxide, the efficiency of which is plagued by side reactions. Metal-free covalent organic frameworks (COFs) that can form suitable intermediates and inhibit side reactions show great promise to photo-synthesize H 2 O 2 . However, the insufficient formation and separation/transfer of photogenerated charges in such materials restricts the efficiency of H 2 O 2 production. Herein, we provide a strategy for the design of donor-acceptor COFs to greatly boost H 2 O 2 photosynthesis. We demonstrate that the optimal intramolecular polarity of COFs, achieved by using suitable amounts of phenyl groups as electron donors, can…

• NN
  National Natural Science Foundation of China

  Awards: 52270015, No. 42025706, 51721006, 42025706