Strongly Coupled Interface in Electrostatic Self-Assembly Covalent Triazine Framework/Bi 19 S 27 Br 3 for High-Efficiency CO 2 Photoreduction

Constructing a strong bonded interface is highly desired to build fast charge-transfer channels and tune reactive sites for optimizing CO2 photoreduction. In this work, a covalent triazine framework (CTF) combined with a Bi19S27Br3 heterojunction is designed using an electrostatic self-assembly process. Due to the oppositely charged states between two components and ultrasonic treatment, a strong coupled interface is realized with the formation of Bi–C/N/O bonds, leading to robust interfacial polarization. This feature causes interfacial charge redistribution, intensifies the interaction between triazine N reactive sites and CO2, stabilizes the intermediate state, and lowers the reaction energy barrier.…

• MO
  Ministry of Education - Singapore

  Award: MOE-MOET2EP10121-0006
• NN
  National Natural Science Foundation of China

  Awards: 22205108, 22378206, U2141202
• FR
  Fundamental Research Funds for the Central Universities

  Award: 30922010302