Fu, Zhiwei, Shu, Chang, Wang, Xiaoyan, Chen, Linjiang, Wang, Xue, Liu, Lunjie, Wang, Kewei, Clowes, Rob, Chong, Samantha Y 
ORCID: 0000-0002-3095-875X, Wu, Xiaofeng ORCID: 0000-0001-5549-8836 et al (show 1 more authors)
(2023)
Fluorinated Covalent Organic Frameworks Coupled with Molecular Cobalt Cocatalysts for Efficient Photocatalytic CO2 Reduction.
CCS CHEMISTRY, 5 (10).
pp. 2290-2300.
Abstract
The combination of covalent organic framework (COF) photosensitizers with molecular cocatalysts is a promising avenue for photocatalytic carbon dioxide (CO2) reduction. Here, a series of isostructural COFs was synthesized using linkers of different lengths, with or without partial fluorination. These COFs were investigated for photocatalytic CO2 reduction under visible-light irradiation when combined with cobalt(II) bipyridine complexes as a cocatalyst. Fluorination was found to enhance both CO2 affinity and catalytic activity, and a partially fluorinated COF, FBP-COF, achieved the highest CO2-to-CO conversion efficiency, showing a carbon monoxide (CO) generation rate of 2.08 mmol h−1 g−1 and a 90% CO selectivity. FBP-COF also showed good stability under sacrificial conditions, generating CO for 50 h with a turnover number of 91.5. This activity is much higher than a homogeneous system using ruthenium bipyridine complexes as the photosensitizer combined with the same cobalt bipyridine complexes.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | sis, covalent organic frameworks, fluorinated, solar, energy conversion |
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 29 Sep 2023 15:33 |
| Last Modified: | 15 Mar 2024 08:33 |
| DOI: | 10.31635/ccschem.023.202202688 |
| Open Access URL: | https://doi.org/10.31635/ccschem.023.202202688 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3173236 |
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