Integrating Dual-Metal Sites into Covalent Organic Frameworks for Enhanced Photocatalytic CO 2 Reduction

Photocatalytic CO2 reduction holds great promise for synchronously addressing carbon neutrality and producing fuels, although enhancing the photocatalyst activity and tuning the product selectivity remain enormous challenges. Herein, we synthesized four crystalline and porous benzothiadiazole-based covalent organic frameworks (COFs) with different carbonyl groups and reported a dual metalation strategy to fabricate Co and Ni dual-metal sites anchored on the benzothiadiazole-based COFs by the interaction between metal and thiadiazole for high-performance CO2 photoreduction. Among the as-synthesized COFs metalated by Co/Ni dual sites, CoNi–COF-3 achieved an impressive CO generation rate of 2567 μmol g–1 h–1 with…

• NN
  National Natural Science Foundation of China

  Award: 21908038
• DO
  Department of Education of Hebei Province

  Award: BJK2022045