分级ZIF衍生碳/Bi12O17Cl2异质结构协同调控电子动力学与光学性能,提升纯水体系中CO2光还原性能OA

Conventional Bi12O17Cl2 photocatalyst suffer from narrow solar harvesting,weak CO2 adsorption and poor charge utilization.Herein,an intimate hierarchical heterojunction was constructed by embedding Bi12O17Cl2 ultrathin nanotubes into hierarchical Co-ZIF-derived porous carbon(Co-PC/BOC).Multi-cavity reflection within Co-PC nanocages and localized surface plasmon resonance of in situ generated Co3O4 domains synergistically enhance the light harvest ability of the Co-PC/BOC in the full spectral range.In pure water without any photosensitizers or sacrificial agents,the optimal composite exhibits a CO yield of 34.16 μmol g−1 h−1 with 100%selectivity,2.9-fold higher than bare BOC.In situ DRIFTS and photo/electrochemical characterizations demonstrate that Co-PC serves as a dual-function platform of plasmonic hot-electron injector and charge separation hub,whereas BOC provide abundant surface sites for *COOH formation and *CO cleavage.Our work highlights the promising potential of metal-organic frameworks and their derivatives in developing efficient artificial photosynthesis systems.