摘要
The design and synthesis of metal–organic frameworks (MOFs) with outstanding light-harvesting and photoexcitation for artificial photocatalytic CO2 reduction is an attractive but challenging task. In this work, a novel aggregation-induced emission (AIE)-active ligand, tetraphenylpyrazine (PTTBPC) is proposed and utilized for the first time to construct a Zr-MOF photocatalyst via coordination with stable Zr-oxo clusters. Zr-MOF is featured by a scu topology with a two-fold interpenetrated framework, wherein the PTTBPC ligands enable strong light-harvesting and photoexcitation, while the Zr-oxo clusters facilitate CO2 adsorption and activation, as well as offer potential sites for further metal modification. Consequently, the Zr-PTTBPC and its Co/Ni derivatives not only exhibit exceptional stability and high CO2 adsorption capability (73 cm3 g−1 at 273 K and 1 atm), but also demonstrate a CO production rate of up to 293.2 µmol g h−1 under 420 nm LED light that can be reused for at least three cycles. With insights from charge-carrier dynamics and theoretical calculations, the underlying mechanism is revealed, confirming that the single-phase multi-component synergy is the key for the outstanding photocatalytic CO2 reduction. This work showcases a brand-new type of MOF photocatalyst based on AIE ligands and their promising applications in photocatalytic C1 conversion.
源语言 | 英语 |
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期刊 | Advanced Materials |
DOI | |
出版状态 | 已接受/待刊 - 2025 |
已对外发布 | 是 |