globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.08.009
论文题名:
Forming electron traps deactivates self-assembled crystalline organic nanosheets toward photocatalytic overall water splitting
作者: Wang L.; Liu J.; Wang H.; Cheng H.; Wu X.; Zhang Q.; Xu H.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
卷: 66, 期:3
起始页码: 265
结束页码: 274
语种: 英语
中文关键词: Conjugated polymers ; Deactivation ; Photocatalysis ; Self-assembly ; Water splitting
英文关键词: Artificial photosynthesis ; Electron traps ; Electronic structure ; Energy conversion ; Light ; Molecules ; Nanosheets ; Photocatalytic activity ; Solar energy ; Critical challenges ; Crystalline structure ; Deactivation mechanism ; Photoredox reactions ; Structural disorders ; Supramolecular assemblies ; Visible-light irradiation ; Water splitting reactions ; Nanocrystalline materials
英文摘要: Most biological photoredox reactions occur in sophisticated molecular assemblies consisting of highly organized light-harvesting moieties and catalytic centers. Mimicking these prototypes by creating supramolecular assemblies could be a potentially viable approach toward artificial photosynthesis. Although self-assembled organic materials are known to carry out water splitting reactions, developing self-assembled organic materials for photocatalytic overall water splitting still remains a critical challenge. Herein, we first demonstrate that crystalline organic nanosheets assembled from linear oligo(phenylene butadiynylene) (OPB) are able to catalyze overall water splitting under visible light irradiation. Further investigations reveal that the photocatalytic activity of self-assembled organic structures is closely related to the crystalline structure along with the corresponding electronic structure. Structural disorders in OPB nanosheets and extrinsic factors such as adsorbed water molecules will induce the formation of electron traps which can make the OPB nanosheets thermodynamically unfavorable for photocatalytic overall water splitting. The deactivation mechanism unveiled in this study provides crucial insights into the assembling of artificial organic materials for future solar-to-chemical energy conversion. © 2020 Science China Press
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170426
Appears in Collections:气候变化与战略

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作者单位: Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China; Hefei National Laboratory for Physical Sciences at the Microscale, Synergetic Innovation Center of Quantum Information and Quantum Physics, Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China; Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, 230026, China

Recommended Citation:
Wang L.,Liu J.,Wang H.,et al. Forming electron traps deactivates self-assembled crystalline organic nanosheets toward photocatalytic overall water splitting[J]. Science Bulletin,2021-01-01,66(3)
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