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A bioinspired water oxidation catalyst that is ∼1/10<sup>th</sup> as active as the photosystem II oxygen evolving center at pH 7: a study of activity and stability factors

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dc.contributor.authorBoskovic, Danijelen
dc.contributor.authorTerrett, Richarden
dc.contributor.authorLonghurst, Matthewen
dc.contributor.authorBasheer, Sabeelen
dc.contributor.authorAriafard, Alirezaen
dc.contributor.authorWagner, Pawelen
dc.contributor.authorPace, Ronald J.en
dc.contributor.authorStranger, Roben
dc.contributor.authorSwiegers, Gerhard F.en
dc.date.accessioned2025-05-23T10:24:09Z
dc.date.available2025-05-23T10:24:09Z
dc.date.issued2024-10-29en
dc.description.abstractThe activity and stability of a heterogeneous water oxidation catalyst inspired by the Photosystem II - Oxygen Evolving Center (PSII-OEC) is reported. Ca-doped birnessite MnOx supported on a liquid crystalline reduced graphene oxide (LCrGO) substrate exhibited unprecedented performance for an abiological catalyst at pH 7, including an exceedingly low onset overpotential of 0.52 V (vs. 0.48 V reported for the PSII-OEC, 0.75 V for Pt, and 0.72 V for birnesite MnOx) and remarkably high activity per unit area at 0.56 V overpotential (∼10% that of a hypothetical, closely-packed monolayer of OEC sites at their optimum density of 1014 sites per cm2).en
dc.description.sponsorshipThis work was financially supported by the Australian Renewable Energy Agency (ARENA), contract number 2018/RND004. This activity received funding from ARENA as part of ARENA's Research and Development Program-Renewable Hydrogen for Export. SMB thanks the Australian Government for an Endeavour Fellowship. The authors thank: Rouhollah Jalili for the LCGO, Attila Mozer for use of a gas chromatograph, and George Tsekouras for advice. The authors acknowledge support from: the Australian National Fabrication Facility (ANFF) Materials Node, the Australian Research Council (Project Numbers CE140100012, and LE160100063).en
dc.description.statusPeer-revieweden
dc.format.extent6en
dc.identifier.issn1477-9226en
dc.identifier.otherPubMed:39495212en
dc.identifier.otherORCID:/0000-0003-2383-6380/work/184103493en
dc.identifier.scopus85208816179en
dc.identifier.urihttp://www.scopus.com/inward/record.url?scp=85208816179&partnerID=8YFLogxKen
dc.identifier.urihttps://hdl.handle.net/1885/733752064
dc.language.isoenen
dc.rightsPublisher Copyright: © 2024 The Royal Society of Chemistry.en
dc.sourceDalton Transactionsen
dc.titleA bioinspired water oxidation catalyst that is ∼1/10<sup>th</sup> as active as the photosystem II oxygen evolving center at pH 7: a study of activity and stability factorsen
dc.typeJournal articleen
dspace.entity.typePublicationen
local.bibliographicCitation.lastpage17788en
local.bibliographicCitation.startpage17783en
local.contributor.affiliationBoskovic, Danijel; University of Wollongongen
local.contributor.affiliationTerrett, Richard; Department of Health Economics, Wellbeing and Society, National Centre for Epidemiology and Population Health, ANU College of Law, Governance and Policy, The Australian National Universityen
local.contributor.affiliationLonghurst, Matthew; University of Wollongongen
local.contributor.affiliationBasheer, Sabeel; University of Wollongongen
local.contributor.affiliationAriafard, Alireza; Chemistry Research, Research School of Chemistry, ANU College of Science and Medicine, The Australian National Universityen
local.contributor.affiliationWagner, Pawel; University of Wollongongen
local.contributor.affiliationPace, Ronald J.; Research School of Chemistry Director's section, Research School of Chemistry, ANU College of Science and Medicine, The Australian National Universityen
local.contributor.affiliationStranger, Rob; Chemistry Research, Research School of Chemistry, ANU College of Science and Medicine, The Australian National Universityen
local.contributor.affiliationSwiegers, Gerhard F.; University of Wollongongen
local.identifier.citationvolume53en
local.identifier.doi10.1039/d4dt02336fen
local.identifier.pure5dc3d6c8-385c-4fc3-a7a7-d6d627eb97d1en
local.identifier.urlhttps://www.scopus.com/pages/publications/85208816179en
local.type.statusPublisheden

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