Covalent organic frameworks with high quantum efficiency in sacrificial photocatalytic hydrogen evolution
Dalian Institute of Chemical Physics · Chinese Academy of Sciences · +1 more institution
Abstract
Abstract Organic semiconductors offer a tunable platform for photocatalysis, yet the more difficult exciton dissociation, compared to that in inorganic semiconductors, lowers their photocatalytic activities. In this work, we report that the charge carrier lifetime is dramatically prolonged by incorporating a suitable donor-acceptor (β-ketene-cyano) pair into a covalent organic framework nanosheet. These nanosheets show an apparent quantum efficiency up to 82.6% at 450 nm using platinum as co-catalyst for photocatalytic H 2 evolution. Charge carrier kinetic analysis and femtosecond transient absorption spectroscopy characterizations verify that these modified covalent organic framework nanosheets have…
Citation impact
- FWCI
- 19.24
- Percentile
- 100%
- References
- 66
Authors
6- CLChunzhi LiCorresponding
Dalian Institute of Chemical Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences
- JLJiali Liu
Dalian Institute of Chemical Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences
- HLHe Li
Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- KWKaifeng Wu
Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- JWJunhui Wang
Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Topics & keywords
- Photocatalysis
- Charge carrier
- Materials science
- Covalent bond
- Photochemistry
- Nanosheet
- Dissociation (chemistry)
- Acceptor
Funding
- NNNational Natural Science Foundation of ChinaAwards: 21733009, 22002162, XDB17020200, 21733009,22002162,21973091, 21973091
- CAChinese Academy of SciencesAwards: 2021185, XDB17020200
- YIYouth Innovation Promotion Association of the Chinese Academy of SciencesAward: 2021185
- YIYouth Innovation Promotion Association