“…Photocatalytic technology can directly degrade organic pollutants into CO 2 and H 2 O, thus offering benefits such as low energy consumption, high efficiency, wide sources, and low cost. It has been extensively studied and applied in wastewater treatment and gas purification fields. − Currently, various nanocatalysts, particularly green and efficient photocatalysts, have been developed and applied for the catalytic degradation of organic pollutants, including TiO 2 , ZnO, metal sulfides, and MOFs. − Among these photocatalysts, TiO 2 is well-known for its high efficiency, outstanding stability, long duration, and low cost. In general, catalysts are directly added to wastewater to degrade organic pollutants.…”