Conjugated donor-acceptor polymer photocatalysts with electron-output "tentacles" for efficient hydrogen evolution

被引:192
|
作者
Lan, Zhi-An [1 ]
Ren, Wei [1 ]
Chen, Xiong [1 ]
Zhang, Yongfan [1 ]
Wang, Xinchen [1 ]
机构
[1] Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China
基金
中国国家自然科学基金;
关键词
Conjugated polymer; Photocatalysis; Hydrogen evolution; Electron-output "tentacles; Artificial photosynthesis; CARBON NITRIDE POLYMERS; CHARGE-TRANSFER; ORGANIC PHOTOCATALYSTS; MICROPOROUS POLYMERS; WATER; SEMICONDUCTORS; DERIVATIVES; FRAMEWORKS; NANOSHEETS; REDUCTION;
D O I
10.1016/j.apcatb.2019.01.010
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
The tunable structures and versatile properties for conjugated polymers (CPs) make them viable as a molecular platform for photocatalytic water splitting. Normally, structure design of polymer photocatalyst is focus on tuning its optical band structure or charge-separation ability, the importance of electron-output ability in photocatalytic process is always ignored. This study demonstrates a molecular engineering strategy by introducing an electron-output "tentacle" site, i.e. dibenzothiophene-S,S-dioxide (FSO) unit, into the polymer backbone to construct a series of donor-acceptor type conjugated polymer photocatalysts for efficient hydrogen evolution, which not only results in optimized light absorption ability and excellent exciton-separation, but also leads to the efficient electron-output ability. Detailed DFT calculations further theoretically confirm the vital role of FSO unit as an electron-output "tentacle" site.
引用
收藏
页码:596 / 603
页数:8
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