Combined ultrasound/ozone degradation of carbazole in APG1214 surfactant solution

► We first describe the role of US/O3 in promoting carbazole degradation in APG1214 solution. ► 20 W ultrasound for 30 min improves the effectiveness of carbazole ozonolysis by 5-10%. ► 40 W or 80 W only plays a role in promoting degradation of carbazole in the first 5 min. ► The content of OH radical is inversely proportional to the ultrasound power. ► Absolute value of zeta potential of APG1214 micelles is inversely proportional to US power.