Xu, K;
Chatzitakis, A;
Backe, PH;
Ruan, Q;
Tang, J;
Rise, F;
Bjørås, M;
(2021)
In situ cofactor regeneration enables selective CO2 reduction in a stable and efficient enzymatic photoelectrochemical cell.
Applied Catalysis B: Environmental
, 296
, Article 120349. 10.1016/j.apcatb.2021.120349.
(In press).
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Abstract
Mimicking natural photosynthesis by direct photoelectrochemical (PEC) reduction of CO to chemicals and fuels requires complex cell assemblies with limitations in selectivity, efficiency, cost, and stability. Here, we present a breakthrough cathode utilizing an oxygen tolerant formate dehydrogenase enzyme derived from clostridium carboxidivorans and coupled to a novel and efficient in situ nicotinamide adenine dinucleotide (NAD /NADH) regeneration mechanism through interfacial electrochemistry on g-C N films. We demonstrate stable (20 h) aerobic PEC CO -to-formate reduction at close to 100 % faradaic efficiency and unit selectivity in a bio-hybrid PEC cell of minimal engineering with optimized Ta N nanotube photoanode powered by simulated sunlight with a solar to fuel efficiency of 0.063 %, approaching that of natural photosynthesis. 2 3 4 2 3 5 +
| Type: | Article |
|---|---|
| Title: | In situ cofactor regeneration enables selective CO2 reduction in a stable and efficient enzymatic photoelectrochemical cell |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.apcatb.2021.120349 |
| Publisher version: | http://dx.doi.org/10.1016/j.apcatb.2021.120349 |
| Language: | English |
| Additional information: | © 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10129226 |
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