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Photoreduction of CO2 with a Formate Dehydrogenase Driven by Photosystem II Using a Semi-artificial Z-Scheme Architecture.

Published version
Peer-reviewed

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Authors

Sokol, Katarzyna P 
Robinson, William E 
Oliveira, Ana R 
Warnan, Julien 
Nowaczyk, Marc M 

Abstract

Solar-driven coupling of water oxidation with CO2 reduction sustains life on our planet and is of high priority in contemporary energy research. Here, we report a photoelectrochemical tandem device that performs photocatalytic reduction of CO2 to formate. We employ a semi-artificial design, which wires a W-dependent formate dehydrogenase (FDH) cathode to a photoanode containing the photosynthetic water oxidation enzyme, Photosystem II, via a synthetic dye with complementary light absorption. From a biological perspective, the system achieves a metabolically inaccessible pathway of light-driven CO2 fixation to formate. From a synthetic point of view, it represents a proof-of-principle system utilizing precious-metal-free catalysts for selective CO2-to-formate conversion using water as an electron donor. This hybrid platform demonstrates the translatability and versatility of coupling abiotic and biotic components to create challenging models for solar fuel and chemical synthesis.

Description

Keywords

Biocatalysis, Carbon Dioxide, Coloring Agents, Cyanobacteria, Desulfovibrio vulgaris, Electrochemical Techniques, Electrodes, Formate Dehydrogenases, Ketones, Light, Oxidation-Reduction, Photosystem II Protein Complex, Plastoquinone, Proof of Concept Study, Pyrroles, Titanium, Water

Journal Title

J Am Chem Soc

Conference Name

Journal ISSN

0002-7863
1520-5126

Volume Title

140

Publisher

American Chemical Society (ACS)
Sponsorship
Christian Doppler Forschungsgesellschaft (unknown)
European Research Council (682833)
Engineering and Physical Sciences Research Council (EP/G037221/1)
EPSRC (1209730)
Engineering and Physical Sciences Research Council (EP/L015978/1)
ERC Consolidator Grant, EPSRC, Christian Doppler Research Association (Austrian Federal Ministry for Digital and Economic Affairs and the National Foundation for Research, Technology and Development), the OMV group, Deutsche Forschungsgemeinschaft, European Union's Horizon 2020 MSCA, Fundação para a Ciência e Tecnologia (Portugal), COMPETE2020/POCI and European Union’s Horizon 2020
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