Cathodic electrosynthesis of ceramic deposits

Cathodic electrosynthesis of TiO2, ZrO2 und ZrTiO4 deposits on platinum substrates was performed via hydrolysis of TiCl4 and ZrOCl2 salts dissolved in a mixed methanol-water solvent in presence of hydrogen peroxide by an electrogenerated base. The deposits were characterized by XRD, TG/DTA, SEM and EDS. Deposits as obtained were amorphous. The crystallization behaviour of the deposits has been studied. Crystallite sizes were derived at different temperatures from X-ray broadening data. A possible mechanism of electrosynthesis and the role of hydrogen peroxide are discussed.