Photocatalysts Based on Cobalt-Chelating Conjugated Polymers for Hydrogen Evolution from Water

被引:76
作者
Li, Lianwei [1 ,2 ]
Hadt, Ryan G. [3 ]
Yao, Shiyu [3 ]
Lo, Wai-Yip [1 ,2 ]
Cai, Zhengxu [1 ,2 ]
Wu, Qinghe [1 ,2 ]
Pandit, Bill [4 ]
Chen, Lin X. [3 ,4 ]
Yu, Luping [1 ,2 ]
机构
[1] Univ Chicago, Dept Chem, 929 East 57th St, Chicago, IL 60637 USA
[2] Univ Chicago, James Franck Inst, 929 East 57th St, Chicago, IL 60637 USA
[3] Argonne Natl Lab, Chem Sci & Engn Div, 9700 South Cass Ave, Lemont, IL 60439 USA
[4] Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA
基金
美国国家科学基金会;
关键词
VISIBLE-LIGHT IRRADIATION; INCORPORATING 2,2'-BIPYRIDINES; CONDUCTING POLYMER; GENERATION; COMPLEXES; POLY(2,2-BIPYRIDINE-5,5-DIYL); SEMICONDUCTOR; PHOTOPHYSICS; NETWORKS; LIGAND;
D O I
10.1021/acs.chemmater.6b01477
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
Developing photocatalytic systems for water splitting to generate oxygen and hydrogen is one of the biggest chemical challenges in solar energy utilization. In this work, we report the first example of heterogeneous photocatalysts for hydrogen evolution based on in-chain cobalt-chelating conjugated polymers. Two conjugated polymers chelated with earth-abundant cobalt ions were synthesized and found to evolve hydrogen photocatalytically from water. These polymers are designed to combine functions of the conjugated backbone as a light-harvesting antenna and electron-transfer conduit with the in-chain bipyridyl-chelated transition metal centers as catalytic active sites. In addition, these polymers are soluble in organic solvents, enabling effective interactions with the substrates as well as detailed characterization. We also found a polymer-dependent optimal cobalt chelating concentration at which the highest photocatalytic hydrogen production (PHP) activity can be achieved.
引用
收藏
页码:5394 / 5399
页数:6
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