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dc.contributor.authorAltin, Abdulrahman
dc.contributor.authorKrzywiecki, Maciej
dc.contributor.authorSarfraz, Adnan
dc.contributor.authorToparli, Cigdem
dc.contributor.authorLaska, Claudius
dc.contributor.authorKerger, Philipp
dc.contributor.authorZeradjanin, Aleksandar
dc.contributor.authorMayrhofer, Karl J.J.
dc.contributor.authorRohwerder, Michael
dc.contributor.authorErbe, Andreas
dc.identifier.citationBeilstein Journal of Nanotechnology. 2018, 9 936-944.nb_NO
dc.description.abstractCorrosion inhibitors are added in low concentrations to corrosive solutions for reducing the corrosion rate of a metallic material. Their mechanism of action is typically the blocking of free metal surface by adsorption, thus slowing down dissolution. This work uses electrochemical impedance spectroscopy to show the cyclic oligosaccharide β-cyclodextrin (β-CD) to inhibit corrosion of zinc in 0.1M chloride with an inhibition efficiency of up to 85%. Only a monomolecular adsorption layer of β-CD is present on the surface of the oxide covered metal, with Raman spectra of the interface proving the adsorption of the intact β-CD. Angular dependent X-ray photoelectron spectroscopy (ADXPS) and ultraviolet photoelectron spectroscopy (UPS) were used to extract a band-like diagram of the β-CD/ZnO interface, showing a large energy level shift at the interface, closely resembling the energy level alignment in an n–p junction. The energy level shift is too large to permit further electron transfer through the layer, inhibiting corrosion. Adsorption hence changes the defect density in the protecting ZnO layer. This mechanism of corrosion inhibition shows that affecting the defect chemistry of passivating films by molecular inhibitors maybe a viable strategy to control corrosion of metals.nb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleCyclodextrin inhibits zinc corrosion by destabilizing point defect formation in the oxide layernb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.source.journalBeilstein Journal of Nanotechnologynb_NO
dc.description.localcode© 2018 Altin et al.; licensee Beilstein-Institut. This is an Open Access article under the terms of the Creative Commons Attribution License (
cristin.unitnameInstitutt for materialteknologi

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