The anodic evolution of oxygen and chlorine on foreign metal-doped SnO2 film electrodes

Abstract

The anodic evolution of oxygen and chlorine on foreign metal-doped SnO2 film electrodes were studied, in connection with their physical and chemical properties. In general, the anodic characteristics of noble metal-doped electrodes were much better than those of base metal-doped electrodes. The oxygen evolution reaction on noble metal-doped electrodes reflected each characteristic of the doped noble metals and the active center for this reaction was considered to be on the noble metal sites. On the other hand, the chlorine evolution reaction on such electrodes was found to be independent of the kind of doped noble metals and the probable mechanism for this reaction was proposed in which the spillover of Cl radical from noble metal to Sn sites was involved. © 1981.