X-ray absorption spectroscopy on electrochemically oxidized Cu exposed toNa2S
2011 (English)In: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 54, 85-89 p.Article in journal (Refereed) Published
Copper surfaces have been investigated by X-ray absorption spectroscopy after electrochemical oxidation and subsequent exposure to sulfide solution. Oxide surface layers on bulk copper surfaces were electrochemically grown in anaqueous NaOH solution at two different potentials and the resulting chemical composition was investigated using X-ray absorption spectroscopy. At both potentials the resulting surfaces consisted largely of Cu2O. At the more strongly oxidizing potential, an admixture of Cu2+-containing phases – mostly Cu(OH)2 – was detected. Sulfide exposure of both surfaces was found to completely reduce the surface from Cu2+ to Cu1+ and resulted in the formation of Cu2S with an admixture of Cu2O.
Place, publisher, year, edition, pages
Amsterdam: Elsevier , 2011. Vol. 54, 85-89 p.
Atom and Molecular Physics and Optics
Research subject Physics with spec. in Atomic, Molecular and Condensed Matter Physics
IdentifiersURN: urn:nbn:se:uu:diva-149328DOI: 10.1016/j.corsci.2011.09.001ISI: 000297894000012OAI: oai:DiVA.org:uu-149328DiVA: diva2:404561