Ultrasonic effects on the electro-reduction of oxygen at a glassy carbon anthraquinome-modified electrode.The Koutecky-Levich equation applied to insonated electro-catalytic reactions

摘要

We report the electro-reduction of oxygen in aqueous solution at glassy carbon electrodes modified by the physical adsorption of 1,2-dihydroxyanthraquinone.The catalytic currents are significantly increased under insonation in a manner quantitatively consistent with the increased mass transport as predicted via the Koutecky-levich equation usign diffusion layer thicknesses calculated via studies on well-defined,simple one-electron systems.