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In situ cofactor regeneration enables selective CO2 reduction in a stable and efficient enzymatic photoelectrochemical cell.

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Title: In situ cofactor regeneration enables selective CO2 reduction in a stable and efficient enzymatic photoelectrochemical cell.
Authors: Xu, Kaiqi1 (AUTHOR), Chatzitakis, Athanasios1 (AUTHOR) a.e.chatzitakis@smn.uio.no, Backe, Paul Hoff2,3 (AUTHOR), Ruan, Qiushi4 (AUTHOR), Tang, Junwang1,4 (AUTHOR) junwang.tang@ucl.ac.uk, Rise, Frode5 (AUTHOR), Bjørås, Magnar2,6 (AUTHOR), Norby, Truls1 (AUTHOR) truls.norby@kjemi.uio.no
Source: Applied Catalysis B: Environment & Energy. Nov2021, Vol. 296, pN.PAG-N.PAG. 1p.
Subjects: Photoelectrochemical cells, Cofactors (Biochemistry), Carbon dioxide, Energy consumption, Radiolabeling, Nicotinamide, Cathodes
Abstract: [Display omitted] • Co-modified Ta 3 N 5 nanotubes reach a photocurrent of 9.4 mA/cm2 at 1.23 V. • g-C 3 N 4 can selectively electro-regenerate NAD+ to 1,4-NADH. • An enzymatic photoelectrochemical cell with a Ta 3 N 5 anode and g-C 3 N 4 cathode is constructed. • A solar-to-formate efficiency of 0.064 % is achieved. • C-13 isotope labelling proves the direct utilisation of CO 2 in the enzymatic cathode. Mimicking natural photosynthesis by direct photoelectrochemical (PEC) reduction of CO 2 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 3 N 4 films. We demonstrate stable (20 h) aerobic PEC CO 2 -to-formate reduction at close to 100 % faradaic efficiency and unit selectivity in a bio-hybrid PEC cell of minimal engineering with optimized Ta 3 N 5 nanotube photoanode powered by simulated sunlight with a solar to fuel efficiency of 0.063 %, approaching that of natural photosynthesis. [ABSTRACT FROM AUTHOR]
Copyright of Applied Catalysis B: Environment & Energy is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 150814919
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  Data: In situ cofactor regeneration enables selective CO2 reduction in a stable and efficient enzymatic photoelectrochemical cell.
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  Data: <searchLink fieldCode="AR" term="%22Xu%2C+Kaiqi%22">Xu, Kaiqi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chatzitakis%2C+Athanasios%22">Chatzitakis, Athanasios</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> a.e.chatzitakis@smn.uio.no</i><br /><searchLink fieldCode="AR" term="%22Backe%2C+Paul+Hoff%22">Backe, Paul Hoff</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ruan%2C+Qiushi%22">Ruan, Qiushi</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tang%2C+Junwang%22">Tang, Junwang</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<i> junwang.tang@ucl.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Rise%2C+Frode%22">Rise, Frode</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bjørås%2C+Magnar%22">Bjørås, Magnar</searchLink><relatesTo>2,6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Norby%2C+Truls%22">Norby, Truls</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> truls.norby@kjemi.uio.no</i>
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  Data: <searchLink fieldCode="JN" term="%22Applied+Catalysis+B%3A+Environment+%26+Energy%22">Applied Catalysis B: Environment & Energy</searchLink>. Nov2021, Vol. 296, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Photoelectrochemical+cells%22">Photoelectrochemical cells</searchLink><br /><searchLink fieldCode="DE" term="%22Cofactors+%28Biochemistry%29%22">Cofactors (Biochemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+dioxide%22">Carbon dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+consumption%22">Energy consumption</searchLink><br /><searchLink fieldCode="DE" term="%22Radiolabeling%22">Radiolabeling</searchLink><br /><searchLink fieldCode="DE" term="%22Nicotinamide%22">Nicotinamide</searchLink><br /><searchLink fieldCode="DE" term="%22Cathodes%22">Cathodes</searchLink>
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  Data: [Display omitted] • Co-modified Ta 3 N 5 nanotubes reach a photocurrent of 9.4 mA/cm2 at 1.23 V. • g-C 3 N 4 can selectively electro-regenerate NAD+ to 1,4-NADH. • An enzymatic photoelectrochemical cell with a Ta 3 N 5 anode and g-C 3 N 4 cathode is constructed. • A solar-to-formate efficiency of 0.064 % is achieved. • C-13 isotope labelling proves the direct utilisation of CO 2 in the enzymatic cathode. Mimicking natural photosynthesis by direct photoelectrochemical (PEC) reduction of CO 2 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 3 N 4 films. We demonstrate stable (20 h) aerobic PEC CO 2 -to-formate reduction at close to 100 % faradaic efficiency and unit selectivity in a bio-hybrid PEC cell of minimal engineering with optimized Ta 3 N 5 nanotube photoanode powered by simulated sunlight with a solar to fuel efficiency of 0.063 %, approaching that of natural photosynthesis. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Applied Catalysis B: Environment & Energy is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.apcatb.2021.120349
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Photoelectrochemical cells
        Type: general
      – SubjectFull: Cofactors (Biochemistry)
        Type: general
      – SubjectFull: Carbon dioxide
        Type: general
      – SubjectFull: Energy consumption
        Type: general
      – SubjectFull: Radiolabeling
        Type: general
      – SubjectFull: Nicotinamide
        Type: general
      – SubjectFull: Cathodes
        Type: general
    Titles:
      – TitleFull: In situ cofactor regeneration enables selective CO2 reduction in a stable and efficient enzymatic photoelectrochemical cell.
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            NameFull: Xu, Kaiqi
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            NameFull: Chatzitakis, Athanasios
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            – D: 05
              M: 11
              Text: Nov2021
              Type: published
              Y: 2021
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              Value: 296
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            – TitleFull: Applied Catalysis B: Environment & Energy
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