Chemija / Chemistry
 ISSN 0235-7216 ISSN 2424-4538 (online) |
2017 m. Nr. 2 Photoelectrochemical behaviour of WO3 and Se-WO3 films modified with cobalt-based oxygen evolving catalyst
Thin films of bare and Se-containing tungsten trioxide (WO3) on AISI304 stainless steel were prepared by electrochemical deposition using peroxy-tungstate solutions. Cobaltphosphate 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.
Keywords: tungsten trioxide (WO3), mixed tungsten trioxide–selenium film, oxygen evolution catalyst, electrodeposition, stainless steel |
Issues:
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