title: Following adsorption kinetics at electrolyte/metal interfaces through crystal truncation scattering: sulfur on Au(111).
abstract: Combining electrochemical methods, in situ scanning tunneling microscopy, and surface x-ray diffraction allowed study of the structure and kinetics of S/Au(111) electrodes in aqueous electrolytes under potential control. Integrated intensities of a particular crystal truncation rod at anti-Bragg conditions were used to trace the sulfur adsorption and desorption as a function of electrode potential in real time. The S desorption is a first order process and the adsorption follows a Langmuir isotherm. A weakly bound S layer is found on the surface before charge transfer, and then specific adsorption occurs.
authors.affiliation: Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), (CIC-CONICET-UNLP), La Plata, Argentina.
authors.forename: C
authors.initials: C
authors.lastname: Vericat
authors.forename: M E
authors.initials: ME
authors.lastname: Vela
authors.forename: G A
authors.initials: GA
authors.lastname: Andreasen
authors.forename: R C
authors.initials: RC
authors.lastname: Salvarezza
authors.forename: F
authors.initials: F
authors.lastname: Borgatti
authors.forename: R
authors.initials: R
authors.lastname: Felici
authors.forename: T-L
authors.initials: TL
authors.lastname: Lee
authors.forename: F
authors.initials: F
authors.lastname: Renner
authors.forename: J
authors.initials: J
authors.lastname: Zegenhagen
authors.forename: J A
authors.initials: JA
authors.lastname: Martín-Gago