Structure of the (Bi)carbonate Adlayer on Cu(100) Electrodes
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(Bi)carbonate adsorption on Cu(100) in 0.1 M KHCO3 has been studied by in situ scanning tunneling microscopy. Coexistence of different ordered adlayer phases with ( 2 ${\sqrt{2}}$ x6 2 ${\sqrt{2}}$ )R45 degrees and (4x4) unit cells was observed in the double layer potential regime. The adlayer is rather dynamic and undergoes a reversible order-disorder phase transition at 0 V vs. the reversible hydrogen electrode. Density functional calculations indicate that the adlayer consists of coadsorbed carbonate and water molecules and is strongly stabilized by liquid water in the adjacent electrolyte.
Originalsprog | Engelsk |
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Artikelnummer | e202211360 |
Tidsskrift | Angewandte Chemie International Edition |
Vol/bind | 61 |
Udgave nummer | 46 |
Antal sider | 7 |
ISSN | 1433-7851 |
DOI | |
Status | Udgivet - 2022 |
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