Integrating Suitable Linkage of Covalent Organic Frameworks into Covalently Bridged Inorganic/Organic Hybrids toward Efficient Photocatalysis

Article abstract of DOI:10.1021/jacs.0c00054

Covalent organic frameworks (COFs) are excellent platforms with tailored functionalities in photocatalysis. There are still challenges in increasing the photochemical performance of COFs. Therefore, we designed and prepared a series of COFs for photocatalytic hydrogen generation. Varying different ratios of β-ketoenamine to imine moieties in the linkages could differ the ordered structure, visible light harvesting, and bandgap. Overall, β-ketoenamine-linked COFs exhibited much better photocatalytic activity than those COFs having both β-ketoenamine and imine moieties on account of a nonquenched excited state and more favorable HOMO level in the photoinduced oxidation reaction from the former. Specifically, after in situ growth of β-ketoenamine-linked COFs onto NH₂-Ti₃C₂T_x MXene via covalent connection, the heterohybrid showed an obvious improvement in photocatalytic H₂ evolution because of strong covalent coupling, electrical conductivity, and efficient charge transfer. This integrated linkage evolution and covalent hybridization approach advances the development of COF-based photocatalysts.

Full text of DOI:10.1021/jacs.0c00054

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Article
Integrating Suitable Linkage of Covalent Organic Frameworks into Covalently
Bridged Inorganic/Organic Hybrids toward Efficient Photocatalysis
hou Wang, Cheng Qian, Jia Liu, Yongfei Zeng, Dongdong Wang,
WEIQIANG ZHOU, Long Gu, Hongwei Wu, Guofeng Liu, and Yanli Zhao
J. Am. Chem. Soc., Just Accepted Manuscript • DOI: 10.1021/jacs.0c00054 • Publication Date (Web): 19 Feb 2020
Downloaded from pubs.acs.org on February 19, 2020
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Journal of the American Chemical Society
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ACS Paragon Plus Environment

Journal of the American Chemical Society
Page 8 of 11
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ACS Paragon Plus Environment

Page 9 of 11
Journal of the American Chemical Society
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