Rational Design of Crystalline Covalent Organic Frameworks for Efficient CO 2 Photoreduction with H 2 O

Abstract Solar energy‐driven conversion of CO 2 into fuels with H 2 O as a sacrificial agent is a challenging research field in photosynthesis. Herein, a series of crystalline porphyrin‐tetrathiafulvalene covalent organic frameworks (COFs) are synthesized and used as photocatalysts for reducing CO 2 with H 2 O, in the absence of additional photosensitizer, sacrificial agents, and noble metal co‐catalysts. The effective photogenerated electrons transfer from tetrathiafulvalene to porphyrin by covalent bonding, resulting in the separated electrons and holes, respectively, for CO 2 reduction and H 2 O oxidation. By adjusting the band structures of TTCOFs, TTCOF‐Zn achieved the highest photocatalytic CO production…

• NN
  National Natural Science Foundation of China

  Awards: 21871141, 21871142, 21701085, 21622104
• NS
  Natural Science Research of Jiangsu Higher Education Institutions of China

  Award: 17KJB150025