Decoupled Artificial Photosynthesis via a Catalysis-Redox Coupled COF||BiVO <subscript>4</subscript> Photoelectrochemical Device.
In: Journal of the American Chemical Society, Jg. 145 (2023-08-16), Heft 32, S. 18141-18147
academicJournal
Zugriff:
Artificial photosynthesis is an attractive approach to direct fuel production from sunlight. However, the simultaneous O 2 evolution reaction (OER) and CO 2 reduction reaction (CDRR) present challenges for product separation and safety. Herein, we propose a strategy to temporally decouple artificial photosynthesis through photoelectrochemical energy storage. We utilized a covalent organic framework (DTCo-COF) with redox-active electron donors (-C-OH moieties) and catalytically active electron acceptors (cobalt-porphyrin) to enable reversible -C-OH/-C═O redox reaction and redox-promoted CO 2 -to-CO photoreduction. Integrating the COF photocathode with an OER photoanode in a photoelectrochemical device allows the effective storage of OER-generated electrons and protons by -C═O groups. These stored charges can be later employed for CDRR while regenerating -C═O to complete the loop, thus enabling on-demand and separate production of O 2 or solar fuels. Our work sets the stage for advancements in decoupled artificial photosynthesis and the development of more efficient solar fuel production technologies.
Titel: |
Decoupled Artificial Photosynthesis via a Catalysis-Redox Coupled COF||BiVO <subscript>4</subscript> Photoelectrochemical Device.
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Autor/in / Beteiligte Person: | Lin, W ; Lin, J ; Zhang, X ; Zhang, L ; Borse, RA ; Wang, Y |
Zeitschrift: | Journal of the American Chemical Society, Jg. 145 (2023-08-16), Heft 32, S. 18141-18147 |
Veröffentlichung: | Washington, DC : American Chemical Society ; <i>Original Publication</i>: Easton, Pa. [etc.], 2023 |
Medientyp: | academicJournal |
ISSN: | 1520-5126 (electronic) |
DOI: | 10.1021/jacs.3c06687 |
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