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

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.