title: Commensurate water monolayer at the RuO2(110)/water interface.
abstract: We demonstrate the presence of two types of commensurate, registered water monolayers with different densities at the RuO2(110)/bulk-water (0.1 M NaOH solution) interface with off-specular, oxygen crystal truncation rods. At anodic potentials (close to oxygen evolution), the extraneous water layer and the surface hydroxide layer form a bilayer with O-H-O bond distances similar to that of ice X. At cathodic potentials, the water molecules converted from the bridging OH molecules form a low-density water layer.
authors.affiliation: Argonne National Laboratory, Materials Science Division, Argonne, IL 60439, USA.
authors.forename: Y S
authors.initials: YS
authors.lastname: Chu
authors.forename: T E
authors.initials: TE
authors.lastname: Lister
authors.forename: W G
authors.initials: WG
authors.lastname: Cullen
authors.forename: H
authors.initials: H
authors.lastname: You
authors.forename: Z
authors.initials: Z
authors.lastname: Nagy