选择性
催化作用
合作性
格式化
化学
分子
结晶学
配体(生物化学)
金属有机骨架
材料科学
星团(航天器)
组合化学
物理化学
计算机科学
有机化学
生物化学
吸附
受体
程序设计语言
作者
Yujie Wang,Hongjuan Wang,Fang Luo,Shuang Yao,Tong‐Bu Lu,Zhi‐Ming Zhang
标识
DOI:10.1016/j.apcatb.2021.120487
摘要
It is extremely desirable to explore molecular catalysts with precise structure for in-depth exploring structure-activity relationship of CO2 photoreduction. Herein, we demonstrate the precise encapsulation of dual-nuclear clusters {Fe2(H2O)6(triazole)3} into metal-organic frameworks (MOFs) via ligand substitution strategy, resulting in two Fe2@Fe3-MOF composites (Fe3-Fe2 and NH2-Fe3-Fe2). The fixed distance between two adjacent Fe3(μ3-O)Cl(H2O)2 nodes in the MOF matrix allows the Fe2-Tri clusters to be fixed at a predetermined distance to unveil the critical role in improving the activity and selectivity for CO2 reduction. The performance of Fe3-Fe2 and NH2-Fe3-Fe2 can reach to 309.3 and 395.5 μmol g−1 h−1 respectively, much superior to most of the state-of-the-art MOF catalysts. Such high activity and selectivity for formate generation can be attributed to the inter-clusters synergy mediated via in situ formed H-bonds and the cluster-framework cooperativity, supported by the results of DFT calculations and systemic experimental characterizations.
科研通智能强力驱动
Strongly Powered by AbleSci AI