We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Hydrophilicity‐Controlled Conjugated Microporous Polymers for Enhanced Visible‐Light‐Driven Photocatalytic H<sub>2</sub> Evolution.
- Authors
Wang, Xuepeng; Chen, Bo; Dong, Wenbo; Zhang, Xiaohu; Li, Zibiao; Xiang, Yonggang; Chen, Hao
- Abstract
To take advantage of high surface area of network conjugated microporous polymers, four linear or network conjugated polymers L‐PDBT, L‐PDBT‐O, N‐PDBT, and N‐PDBT‐O are designed in terms of water‐compatibility, and it turned out that microporous network N‐PDBT‐O exhibited the highest hydrogen evolution rate (HER) at 366 µmol h−1 under visible light irradiation (λ > 420 nm, one of best reported pristine polymer‐based photocatalysts), which is three times higher than the corresponding linear L‐PDBT‐O. Water contact angle measurements revealed that benzothiophene‐sulfone‐based conjugated polymers display better water compatibility and adsorption, and the synergic effect of better hydrophilic surface and higher surface area of N‐PDBT‐O might eventually lead to more exposed active sites in comparison to linear L‐PDBT‐O in the H2 evolution suspension system. The hydrophilicity‐controlled strategy could be applied to design of other network conjugated microporous polymer photocatalysts in an attempt to improve the activity. To enhance the photocatalytic H2 evolution ability, conjugated microporous polymer‐based photocatalysts are screened in terms of dispersibility and water compatibility. In this regard, microporous network N‐PDBT‐O exhibited the highest HER under visible light irradiation, and it proves that hydrophilicity‐controlled strategy can be applied to the structural optimization of conjugated microporous polymers for superior activity.
- Subjects
CONJUGATED polymers; POLYMERS; BIOLOGICAL evolution
- Publication
Macromolecular Rapid Communications, 2019, Vol 40, Issue 6, pN.PAG
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.201800494