The research group of Professor Kong Xiangjian and Professor Long Lasheng of Xiamen University has made important progress in the field of photocatalytic reduction of CO2 with rare earth cluster metal organic framework materials

Professor Kong Xiangjian of Xiamen University and Professor Long Lasheng's research group have made important progress in the research of photocatalytic reduction of CO 2 with rare earth cluster based metal organic framework materials The relevant results are published in nature communication with the title of "photo generated dinuclear {EU (II)} 2 active sites for selective CO 2 reduction in photosensing metal organic framework" Communications , 2018 , 9 , 3353 ）。
Using sunlight to drive CO2 reduction can not only reduce CO2 concentration in the atmosphere, but also generate important chemical raw materials, which is one of the ideal ways to alleviate climate warming and develop new energy However, how to prepare high efficiency photocatalyst to convert CO2 into high value-added chemical products with high selectivity is very challenging The research group cleverly assembled the rare earth clusters with catalytic activity and photosensitive ligands, and synthesized the rare earth Eu Ru (phen) 3-mof catalyst with large pore structure, which realized the efficient and selective conversion of CO 2 to formate driven by visible light The results show that the photocatalytic reaction rate of formate can reach 321.9 μ mol h − 1 mmol MOF − 1, which is the most active MOFs catalyst reported so far The results of in situ electron paramagnetic resonance (EPR) showed that the binuclear Eu2 + units formed in situ under illumination were photocatalytic active sites In addition, based on the data of ultrafast transient spectrum and steady / transient fluorescence spectrum and DFT calculation, the mechanism of charge separation and transport in photocatalytic reaction system is revealed, and the mechanism of photocatalytic reaction is explained This work provides experimental reference for the design of rare earth MOFs with high catalytic activity
The research work was completed by Yan Zhihao, Ph.D., and Du Minghao, Ph.D., participated in part of the characterization work; Jin Shengye, researcher of Dalian Institute of Chemical Physics, Chinese Academy of Sciences, and Liu Junxue, Ph.D., supported the transient spectrum characterization; Wang Cheng, Professor of Xiamen University, gave a lot of help in the data analysis process; the theoretical calculation was completed by Zhuang Guilin, associate professor of Zhejiang University of technology The research work was supported by the Ministry of science and Technology (project approval No.: 2014cb845601), the National Natural Science Foundation of China (project approval No.: 2142106, 21673184, 21431005, 21721001, 21390391), the young teachers foundation of HuoYingDong foundation of the Ministry of Education (project approval No.: 151013), etc.