Electroreduction of Anions and Silver Kryptate on a Mercury Electrode in Conditions of Adsorption of Kryptate Complexes

Electroreduction of persulfate, hexacyanoferrate, and perbromate anions on a mercury electrode is studied in conditions of individual adsorption of kryptate complexes of cations and in the case of their co-adsorption with surface-active substances that form two-dimensional condensed layers on the electrode/solution interface. The electroreduction dramatically accelerates during both individual adsorption of kryptate complexes and their co-adsorption with 1-adamantanol, due to an electrostatic effect. The behavior of electrochemically active kryptate complexes is investigated by studying the Ag⁺ kryptate. In the system studied the Ag⁺ 222] complex undergoes diffusion-controlled reduction.