Effect of Titanium Oxide on Hydrogen Peroxide Generation in Plasma-Activated Water

Vishwakarma Institute of Technology, Pune, India

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Abstract

H₂O₂ plays an important role in various applications of disinfection and water treatment. In addition to conventional methods, H₂O₂ can be generated in plasma-activated water using cold plasma. Although plasma-activated water contains H₂O₂, its concentration is typically low. It can be increased with the help of a catalyst like titanium oxide. In this study, titanium oxide powder was added to plasma-activated water to understand its effect on H₂O₂ concentration. The various parameters like treatment time (up to 30 min), TiO₂ weight (2–6 g), and transformer power (70 W, 90 W, and 150 W) were used. Results show that the H₂O₂ concentration increases with treatment time, transformer power, and TiO₂ weight. No significant increase in H₂O₂ concentration was observed beyond 30 minutes of treatment time with 90 W and 150 W transformers. These findings highlight the potential of TiO₂-assisted plasma-activated water for water treatment and disinfection applications.