Sonolysis of Ozone in Aqueous Solution

Article abstract of DOI:10.1021/j100405a007

When water is irradiated with ultrasound under an atmosphere containing oxygen and ozone, an extremely rapid decomposition of O3 takes place.The rate of decomposition increases with the O3 concentration in the liquid phase; at = 1 mM, the rate about 3 mM min^-1.Argon in the O2-O3 mixture acts merely as a diluant.However, the accompanying formation of H2O2 occurs with maximum yield at 80 volpercent argon.These effects are explained by the thermal instability of ozone.Complete decomposition of the O3 content of a pulsating gas bubble occurs regardless of the composition of the bubble, while H2O2 formation takes place with greater efficiency in O3-Ar bubbles where higher temperatures are produced in the acoustic compression phase.