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Bacteria–photocatalyst sheet for sustainable carbon dioxide utilization

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cam.depositDate2022-06-10
cam.issuedOnline2022-07-22
cam.orpheus.counter5
cam.orpheus.successWed Aug 03 09:45:49 BST 2022 - Embargo updated
datacite.issupplementedby.urlhttps://doi.org/10.17863/CAM.84871
dc.contributor.authorWang, Q
dc.contributor.authorKalathil, S
dc.contributor.authorPornrungroj, C
dc.contributor.authorSahm, CD
dc.contributor.authorReisner, E
dc.contributor.orcidWang, Q [0000-0002-8980-4915]
dc.contributor.orcidKalathil, S [0000-0002-2001-2100]
dc.contributor.orcidPornrungroj, C [0000-0001-9886-8489]
dc.contributor.orcidReisner, E [0000-0002-7781-1616]
dc.date.accessioned2022-06-10T23:30:56Z
dc.date.available2022-06-10T23:30:56Z
dc.date.issued2022
dc.date.updated2022-06-10T10:31:24Z
dc.description.abstractThe clean conversion of carbon dioxide and water to a single multicarbon product and O2 using sunlight via photocatalysis without the assistance of organic additives or electricity remains an unresolved challenge. Here we report a bio-abiotic hybrid system with the nonphotosynthetic, CO2-fixing acetogenic bacterium, Sporomusa ovata (S. ovata) grown on a scalable and cost-effective photocatalyst sheet consisting of a pair of particulate semiconductors (La and Rh co-doped SrTiO3 (SrTiO3:La,Rh) and Mo-doped BiVO4 (BiVO4:Mo)). The biohybrid effectively produces acetate (CH3COO–) and oxygen (O2) using only sunlight, CO2 and H2O, achieving a solar-to-acetate conversion efficiency of 0.7%. The photocatalyst sheet oxidises water to O2 and provides electrons and hydrogen (H2) to S. ovata for the selective synthesis of CH3COO– from CO2. To demonstrate the utility in a closed carbon cycle, the solar-generated acetate was used directly as feedstock in a bioelectrochemical system for electricity generation. These semi-biological systems thus offer a promising strategy for sustainably and cleanly fixing CO2 and closing the carbon cycle.
dc.identifier.doi10.17863/CAM.85418
dc.identifier.eissn2520-1158
dc.identifier.issn2520-1158
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/338013
dc.language.isoeng
dc.publisherSpringer Science and Business Media LLC
dc.publisher.departmentDepartment of Chemistry
dc.publisher.urlhttp://dx.doi.org/10.1038/s41929-022-00817-z
dc.rightsAll Rights Reserved
dc.rights.urihttp://www.rioxx.net/licenses/all-rights-reserved
dc.subject34 Chemical Sciences
dc.subject3406 Physical Chemistry
dc.subject7 Affordable and Clean Energy
dc.titleBacteria–photocatalyst sheet for sustainable carbon dioxide utilization
dc.typeArticle
dcterms.dateAccepted2022-06-09
prism.publicationNameNature Catalysis
pubs.funder-project-idEuropean Research Council (682833)
pubs.funder-project-idEuropean Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (744317)
pubs.funder-project-idEuropean Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (793996)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/S025308/1)
pubs.licence-display-nameApollo Repository Deposit Licence Agreement
pubs.licence-identifierapollo-deposit-licence-2-1
rioxxterms.typeJournal Article/Review
rioxxterms.versionAM
rioxxterms.versionofrecord10.1038/s41929-022-00817-z

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