Tailored Metalloporphyrin-Based Three-Dimensional Covalent Organic Frameworks for Enhanced Photocatalytic CO 2 Reduction

The development of efficient photocatalysts for CO2 reduction is essential for addressing climate and energy issues. Three-dimensional covalent organic frameworks (3D COFs) have emerged as potential candidates; however, challenges in their synthesis and structural analysis have hindered the rational design of high-performance photocatalysts. Here, we report the design and synthesis of a series of highly crystalline metalloporphyrin-based 3D COFs (3D-MPor-COF, M = Co, Ni, Pt) featuring 5-fold pts topology. Photocatalytic experiments reveal that the metal center significantly affects their activity, with 3D-CoPor-COF achieving a CO production rate of ∼11.3 mmol g–1 h–1 and 91.9% selectivity. Further optimization…

• NN
  National Natural Science Foundation of China

  Awards: 22572205, 22125102, U21A20285, 22225503, 22421005
• NS
  Natural Science Foundation of Hubei Province

  Award: 2023AFA011
• NK
  National Key Research and Development Program of China

  Awards: 2022YFA0911900, 2022YFA1502903