Editorial: Air and Water Purification Processes through Photocatalysis—Scale-Up Perspectives, 2nd Edition

In the face of escalating environmental challenges, innovative solutions for purifying air and water are more critical than ever. Photocatalysis has emerged as a promising technology for addressing these needs. Upon irradiation, photocatalysts generate Reactive Oxygen Species (ROS) capable of breaking down various pollutants, including volatile organic compounds (VOCs), pathogens, and persistent organic pollutants [1,2]. However, transitioning from laboratory success to widespread practical application presents significant challenges that must be meticulously addressed. Moreover, scaling up photocatalytic systems from the lab to industrial applications involves several critical considerations.