Abstract
Thin films of bare and Se-containing tungsten trioxide (WO3) on AISI304 stainless steel were prepared by electrochemical deposition using peroxy-tungstate solutions. Cobalt-phosphate catalyst was photochemically deposited onto the surface of semiconductor particles in order to enhance their activity towards the oxygen evolution reaction. The photoelectrochemical properties of as-prepared electrodes were investigated in neutral 0.1 M phosphate buffer solutions. The voltammetric characteristics revealed that the presence of cobalt-based catalyst effectively changes the photoelectrocatalytic activity of WO3 and Se-WO3 particles.
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