Semiconductor oxides are used fur removing of toxic and nonbiodegradable or
ganic compounds from waste water due to their electrocatalytic and structur
al properties. Our voltametric measurements of anodic oxidation of phenol f
rom waste water, on titanium coated with pure Co3O4, and Co3O4 + SnO2 + Sb2
O3 mixture, were performed in absence and presence of NaCl in the reaction
medium.