Structure of the (Bi)carbonate Adlayer on Cu(100) Electrodes

(Bi)carbonate adsorption on Cu(100) in 0.1 M KHCO(3) has been studied by in situ scanning tunneling microscopy. Coexistence of different ordered adlayer phases with ([Formula: see text] ×6 [Formula: see text] )R45° and (4×4) unit cells was observed in the double layer potential regime. The adlayer i...

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Detalles Bibliográficos
Autores principales: Amirbeigiarab, Reihaneh, Bagger, Alexander, Tian, Jing, Rossmeisl, Jan, Magnussen, Olaf M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Communications
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9827965/
https://www.ncbi.nlm.nih.gov/pubmed/36122295
http://dx.doi.org/10.1002/anie.202211360
Descripción
Sumario:(Bi)carbonate adsorption on Cu(100) in 0.1 M KHCO(3) has been studied by in situ scanning tunneling microscopy. Coexistence of different ordered adlayer phases with ([Formula: see text] ×6 [Formula: see text] )R45° and (4×4) 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.

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