Metal-Organic Frameworks Significantly Enhance Photocatalytic Hydrogen Evolution and CO2 Reduction with Earth-Abundant Copper Photosensitizers

被引：250
作者：
Feng, Xuanyu [1 ]
Pi, Yunhong [1 ,2 ]
Song, Yang [1 ]
Brzezinski, Carter [1 ]
Xu, Ziwan [1 ]
Li, Zhong [2 ]
Lin, Wenbin [1 ]
机构：
[1] Univ Chicago, Chicago, IL 60637 USA
[2] South China Univ Technol, Guangzhou, Peoples R China
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2020年 / 142卷 / 02期
关键词：
ARTIFICIAL PHOTOSYNTHESIS; HIGHLY EFFICIENT; COMPLEXES; LIGHT; CATALYST; NANOPARTICLES; LUMINESCENT; SYSTEMS;
D O I：
10.1021/jacs.9b12229
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We report here the design of two multifunctional metal-organic frameworks (MOFs), mPT-Cu/Co and mPT-Cu/Re, comprising cuprous photosensitizers (Cu-PSs) and molecular Co or Re catalysts for photocatalytic hydrogen evolution (HER) and CO2 reduction (CO2RR), respectively. Hierarchical organization of Cu-PSs and Co/Re catalysts in these MOFs facilitates multielectron transfer to drive HER and CO2RR under visible light with an HER turnover number (TON) of 18 700 for mPT-Cu/Co and a CO2RR TON of 1328 for mPT-Cu/Re, which represent a 95-fold enhancement over their homogeneous controls. Photophysical and electrochemical investigations revealed the reductive quenching pathway in HER and CO2RR catalytic cycles and attributed the significantly improved performances of MOFs over their homogeneous counterparts to enhanced electron transfer due to close proximity between Cu-PSs and active catalysts and stabilization of Cu-PSs and molecular catalysts by the MOF framework.
引用
收藏
页码：690 / 695
页数：6
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