title: c(2×2) water-hydroxyl layer on Cu(110): a wetting layer stabilized by Bjerrum defects.
abstract: Understanding the composition and stability of mixed water-hydroxyl layers is a key step in describing wetting and how surfaces respond to redox processes. Here we show that, instead of forming a complete hydrogen bonding network, structures containing an excess of water over hydroxyl are stabilized on Cu(110) by forming a distorted hexagonal network of water-hydroxyl trimers containing Bjerrum defects. This arrangement maximizes the number of strong bonds formed by water donation to OH and provides uncoordinated OH groups able to hydrogen bond multilayer water and nucleate growth.
authors.affiliation: Surface Science Research Centre, University of Liverpool, Liverpool, United Kingdom.
authors.forename: Matthew
authors.initials: M
authors.lastname: Forster
authors.forename: Rasmita
authors.initials: R
authors.lastname: Raval
authors.forename: Andrew
authors.initials: A
authors.lastname: Hodgson
authors.forename: Javier
authors.initials: J
authors.lastname: Carrasco
authors.forename: Angelos
authors.initials: A
authors.lastname: Michaelides