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dc.contributor.authorKyrkjebø, Signe
dc.contributor.authorCassidy, Andrew
dc.contributor.authorAkhtar, Naureen
dc.contributor.authorBalog, Richard
dc.contributor.authorScheffler, Martha
dc.contributor.authorHornekær, Liv
dc.contributor.authorHolst, Bodil
dc.contributor.authorFlatabø, Ranveig
dc.date.accessioned2021-08-13T07:33:01Z
dc.date.available2021-08-13T07:33:01Z
dc.date.created2021-02-05T13:15:58Z
dc.date.issued2021
dc.identifier.issn0008-6223
dc.identifier.urihttps://hdl.handle.net/11250/2767699
dc.description.abstractAnti-icing coatings reduce the freezing onset temperature for water by changing the chemical and physical environment at the water-substrate interface to prevent ice nucleation and growth. Graphene oxide has several attributes that make it attractive as an anti-icing coating and it has been theoretically predicted that graphene oxide has a lower freezing onset temperature than pristine graphene. Here, we test this hypothesis using carefully prepared, well-characterized graphene oxide substrates. We compare the water contact angle for graphene and graphene oxide coatings, both prepared on iridium(111) surfaces. The results show both materials to be transparent to wetting, but indicate a lower freezing onset temperature for graphene oxide than for pristine graphene. The measured water contact angles are dominated by the properties of the underlying Ir(111) substrate while the freezing onset temperature is dictated by the functional groups present on the graphene basal plane. We suggest that the lowering of the freezing onset temperature is caused by the formation of a viscous water layer on the surface. Scanning tunneling microscopy and x-ray photoelectron spectroscopy data are used to evaluate the robustness of the coating material and suggest ways to improve the long-term performance, namely by advancing strategies to avoid water intercalation.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleGraphene and graphene oxide on Ir(111) are transparent to wetting but not to icingen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2020 The Author(s).en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2
dc.identifier.doi10.1016/j.carbon.2020.12.030
dc.identifier.cristin1887108
dc.source.journalCarbonen_US
dc.source.pagenumber396-403en_US
dc.identifier.citationCarbon. 2021, 174, 396-403.en_US
dc.source.volume174en_US


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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal