Caractérisation et étude du comportement électrochimique de l’électrode Ti /PtO2 dans les électrolytes aqueux et organiques.

Abstract

The electrodes made from oxide layers of noble metals deposited on titanium substrate can be widely applied in industry as anodes in electrochemical synthesis of inorganic and organic compounds. In this work, we obtained an electrode made from platinum dioxide deposited by thermal treatment of the acid structure of the electrode . The PtO2 was characterized by XRD, conductivity by the method of four points and composition chemical AUGER. The potential of zero charge and the corresponding pH0 were determined in different electrolytes and adsorption of ions and electric charge of the surface area of the electrode were by pH metric and chronoamperometry. The dependence of the adsorption function of several has been clarified. Redox processes occurring at the interface dioxide Pt/ electrolyte with the participation of the solid phase carbon dioxide and the influence of several parameters on the process red-ox were clarified.