Detection of hydroxyl radicals in sonoelectrochemical system

The detection method is stable and accurate, comparing with the single electrochemical and ultrasonic systems, more OH could be trapped in the sonoelectrochemical system; the higher the concentration of the scavenger, the more OH is captured; the OH is promoted to generate in the alkaline conditions; appropriate electrolyte concentration and voltage will enhance the OH yields by increasing the current efficiency; inhibitors can significantly reduce the yields of OH, inorganic inhibitors have better removal effect than organic inhibitors on the OH; the enhancement of power is beneficial to the generation of cavitation effect increasing free radical production, it is not conducive to generate OH when the power is strengthened to a certain degree; the OH may be produced by the decomposition of water molecules and the oxidation of OH− in the system; the process follows first-order reaction kinetics with good linearity.