Photothermal-mediated advanced oxidation processes for wastewater purification

Advanced oxidation processes (AOPs) stand out as promising solutions for wastewater purification. An integration of a photothermal effect in AOPs will bring about a transformative impact on the processes. This innovative approach will boost treatment efficiency and overcome the limitations of the conventional ones. In this review, we thoroughly investigate the progress of applying a photothermal effect on various AOPs technologies for robust wastewater treatment. Our discussion encompasses the origin of the photothermal effect, elucidation of its working principles, and a summary of strategies for engineering the photothermal effect to catalytically remove contaminants. Furthermore, we delve into the diverse applications of photothermal effect in wastewater treatment technologies, spanning photocatalysis, peroxymonosulfate activation, and the Fenton reaction. Finally, we identify some challenges and outline future prospectives for the implementation of photothermal wastewater treatment. This review is anticipated to rejuvenate conventional AOPs, offering more clean, sustainable, and efficient technologies for wastewater treatment.