ABSTRACT Water pollution due to industrial waste contains hazardous pollutant compounds. ZnO semiconductor-based photocatalyst degradation is an effective method for decomposing pollutants by utilizing UV radiation. In this study, the Se-doped (Se/ZnO) material is prepared with variations of Se doping namely 0%, 5%, 10%, and 15% using Matoa leaf extract with microwave irradiation. Doping Se ai…