SHINERS Study of Chloride Order-Disorder Phase Transition and Solvation of Cu(100).

ABSTRACT: Shell-isolated nanoparticle enhanced Raman spectroscopy (SHINERS) and density functional theory (DFT) are used to probe Cl^- adsorption and the order-disorder phase transition associated with the c(2 × 2) Cl^- adlayer on Cu(100) in acid media. A two-component ν(Cu-Cl) vibrational band centered near 260 ± 1 cm^-1 is used to track the potential dependence of Cl^- adsorption. The potential dependence of the dominant 260 cm^-1 component tracks the coverage of the fluctional c(2 × 2) Cl^- phase on terraces in good agreement with the normalized intensity of the c(2 × 2) superstructure rods in prior surface X-ray diffraction (SXRD) studies. As the c(2 × 2) Cl^- coverage approaches saturation, a second ν(Cu-Cl) component mode em

SUBMITTER: Raciti D 

PROVIDER: S-EPMC11521106 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature