Aims: Anodic polarization behavior of a combined iron-titanium electrode (two metals in
electrical contact with each other) in aqueous solutions containing halide ions (F- and Cl-) was studied.
Methods: The joint anodic dissolution of titanium and iron with subsequent thermal treatment makes
it possible to obtain precursors of a highly dispersed mixed oxide system Fe2O3-TiO2. The phase and
elemental composition and structural characteristics of obtained products were examined using X-ray
diffraction and scanning electron microscopy. It has been experimentally confirmed that via changing
the anode current density, hydrofluoric acid concentration in electrolyte and ratio of the working
surface area of contacting metals, it is possible to effectively control the rate of anodic reactions and
phase composition and morphology of anodic oxidation products for iron and titanium components in
a combined electrode.
Results: The main results of this study are as follows: Electrochemical method for the synthesis of
complex dispersed oxide system Fe2O3-TiO2 based on joint anodic oxidation of contacting metals in
aqueous media was suggested. Relationships between parameters of the electrochemical process and
characteristics of the synthesized oxide system were revealed.
Conclusion: By varying the parameters of the electrolysis process, it is possible to prepare complex
oxyhydroxides with different ratios of iron and titanium, which makes it possible to synthesize
precursors of iron titanates of preset composition and structure.