Palladium adsorbed on platinum has been shown to decrease the amount of adsorbed hydrogen because the site requirement of Pdads is about 1.5 times higher than that of adsorbed hydrogen. Metal adsorption via the ionization of adsorbed hydrogen occurs in two steps: the first leading to bulk deposition. This is followed by bulk ionization and repeated reduction, producing the adsorbed metal layer. The electrosorption valency of the adsorbed Pd layer thus formed is about 1.8. The Pdads does not desorb in Cl−‐free media.
ASJC Scopus subject areas