Harada [162] investigated the production of hydrogen from water using photocatalysis aided by ultrasound with an alternating irradiation technique. Ultrasound and light were sequentially irradiated in this approach. Sono photocatalysis was employed for the purpose of extracting hydrogen from seawater. Hydrogen synthesis by water sonolysis does not arise from the interaction between acoustic waves and water, but rather results from acoustic cavitation. It is widely accepted that when pure water is subjected to sonication, the major products are H2 (hydrogen gas) and H2O2