Potential dependence of the optical properties of the copper/aqueous borax interface

S. CERÉ.; S.R. DE SANCHEZ; D.J. SCHIFFRIN

JOURNAL OF ELECTROANALYTICAL CHEMISTRY

Lugar: Elsevier; Año: 1995 vol. 386 p. 165 - 171

0022-0728

The potential dependence of the optical properties of a copper surface at potentials where CuO and CuzO are reduced hasbeen studied by in situ ellipsometry in 0.1 M borax. It is shown that a thin layer of a copper(I) oxide remains on the surface evenafter extensive reduction. It is proposed that these oxide films play an important role in the kinetics of oxygen and hydrogenperoxide reduction.