Rationally Designed Cyclooctatetrathiophene‐Based Porous Aromatic Frameworks (COTh‐PAFs) for Efficient Photocatalytic Hydrogen Peroxide Production

Abstract Constructing stable and efficient photocatalysts for H 2 O 2 production is of great importance and is challenging. In this study, the synthesis of three photoactive cyclooctatetrathiophene (COTh)‐based porous aromatic frameworks (COTh‐PAFs) in an alternating donor‐acceptor (D−A) fashion is presented. In combination with a triazine‐derived electron acceptor, PAF‐363 exhibits high efficiency for the photosynthesis of H 2 O 2 with production rates of 11733 μmol g −1 h −1 (with sacrificial agent) and 3930 μmol g −1 h −1 (without sacrificial agent) from water and oxygen under visible light irradiation. Experimental results and theoretical calculations reveal that the charge transfer positions and the O 2…

• NN
  National Natural Science Foundation of China

  Awards: 22171041, 52173195, 22131004, U21A20330
• NK
  National Key Research and Development Program of China

  Award: 2022YFB3805902, 2022YFB3805900