Monometallic Catalytic Models Hosted in Stable Metal-Organic Frameworks for Tunable CO₂Photoreduction

Xiao-Kun Wang, Jiang Liu, Lei Zhang, Long-Zhang Dong , Shun-Li Li, Yu-He Kan, Dong-Sheng Li, and Ya-Qian Lan

The photocatalytic reduction of CO₂ to energy carriers has emerged as one of the most promising strategies to alleviate the energy crisis and CO₂pollution, for which the development of catalyst was considered as the determining factor for the accomplishment of this conversion process. In this study, three stable and isostructural metal–organic frameworks (denoted asMOF-Ni,MOF-Co, andMOF-Cu) have been synthesized and used as heterogeneous catalysts in photocatalytic CO₂reduction reaction (CO₂RR). It is worth noting that theMOF-Niexhibited very high selectivity of 97.7% for photoreducing CO₂to CO, which has exceeded most of the reported MOF-based catalysts in the field. Significantly, the MOFs associated with a monometallic catalytic center offer a simple and precise structural model which allows us to understand more definitively the specific effects of different metal-ion species on photoreduction of CO₂as well as the reactive mechanism.

文章链接：https://pubs.acs.org/doi/10.1021/acscatal.8b04887