Active Site Isolation and Enhanced Electron Transfer Facilitate Photocatalytic CO2 Reduction by A Multifunctional Metal-Organic Framework

被引：24
作者：
Wang, Zitong [1 ]
Yeary, Pierce [1 ]
Fan, Yingjie [1 ]
Deng, Chenghua [1 ]
Lin, Wenbin [1 ]
机构：
[1] Univ Chicago, Dept Chem, Chicago, IL 60637 USA
来源：
ACS CATALYSIS | 2024年 / 14卷 / 12期
关键词：
metal-organic framework; heterogeneous photocatalysis; CO2; photoreduction; site isolation; synergistic catalysis; CONVERSION; CATALYSIS; CARBON; COMPLEXES; NODES;
D O I：
10.1021/acscatal.4c02326
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report a multifunctional metal-organic framework (MOF) photocatalyst for the CO2 reduction reaction (CO2RR) under visible light irradiation with high efficiency (turnover number = 2638) and CO selectivity (97.0%). The short distance (6.6 & Aring;) between bipyridine sites in the MOF allows the integration of Ir photosensitizers and Ni catalysts in proximity, thereby enhancing their electron transfer for photocatalytic CO2RR. Isolation of these metal centers by the MOF structure prevents their deactivation, leading to 54 times higher CO2RR activity than the homogeneous system and allowing for easy recovery for use in five consecutive cycles of photocatalytic CO2RR without significant loss of catalytic activity.
引用
收藏
页码：9217 / 9223
页数：7
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