Investigation of interfacial reaction kinetics of I−(aq) with Ag2O(s) on Ag substrate: Determining mass transport and surface reaction rates

The reaction kinetics of AgI formation by reaction of Ag 2 O films with aqueous iodide were followed by monitoring the open-circuit potential ( E null OC ). Previous studies have shown that complete conversion of Ag 2 O to AgI is indicated by an abrupt transition in the null E null OC null from a value close to the equilibrium potential for the Ag|Ag 2 O|H 2 O system to one close to that for Ag|AgI|I − , allowing an easy determination of the...