Sonophotocatalytic reaction of sodium chloride solution: Comparison of reaction products from sodium chloride solution with those from pure water and influence of insoluble photocatalyst on sonochemical reaction

A sonophotocatalytic reaction of NaCl solution was performed. Hydrogen and oxygen were obtained continuously. A sonophotocatalytic reaction is a photocatalytic reaction with ultrasonic irradiation or the simultaneous irradiation of light and ultrasound with a photocatalyst. The higher the concentration of NaCl in a solution, the lower the amount of products obtained. However. there was negligible influence on the products at lower concentrations. Therefore, it was concluded that the impurities such as chloride ions, from the photocatalyst had negligible effect on the sonophotocatalysis of water, it was also demonstrated that a suitable photocatalyst particle size must be selected for the sonophotocatalytic reaction to proceed. The possibility of decomposition of seawater to H-2 and O-2 was also examined.