Abstract
Dissolved ozone up to 34 mg/L was generated by direct electrolysis of water using a titanium electrode coated with an antimony-doped tin dioxide film. The electrode was prepared by spray pyrolysis at 520°C. The current efficiency of ozone generation was 15% in a 0.1 M HClO 4 aqueous solution at room temperature. The electrolytic generation of ozone depends critically on the composition and morphology of the coating and a good generation was observed with Sb:Sn atomic ratio of 1:7 and a smooth and compact surface with connected particles of 3-5 nm diameter.
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