Electrochemical synthesis of tetragonal oxide tungsten bronze nanofilms on platinum

Аннотация

We are the first to synthesize nanofilms of tetragonal oxide tungsten bronze (OTB) on a Pt(110) substrate by the electrolysis of the K₂WO₄–Na₂WO₄–WO₃ melt at 700 and 750°C. The composition and the morphology of OTB are shown to depend on the deposition potential and the WO₃ concentration in the melt. The laws of formation of tetragonal OTB films are discussed. The synthesized OTB samples are found to have a good thermal stability in the temperature range 20–800°C.