Industrial dyes pose significant environmental challenges due to their complex chemical structures and high resistance to degradation. Photocatalytic degradation has emerged as a promising solution for the effective removal of these pollutants. “This study focuses on the utilization of green-synthesized nanomaterials for the photocatalytic degradation of industrial dyes. Green synthesis methods offer an environmentally friendly alternative to conventional chemical synthesis, employing natural resources like plant extracts, microorganisms, and biodegradable polymers. The synthesized nanomaterials, characterized by techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-Vis spectroscopy, demonstrated high photocatalytic activity under visible light irradiation. Key parameters influencing the degradation process, including pH, dye concentration, catalyst dosage, and light intensity, were systematically investigated. Mechanistic studies revealed that the generation of reactive oxygen species (ROS) such as hydroxyl radicals and superoxide anions played a crucial role in the degradation of dye molecules. The photocatalytic efficiency of the nanomaterials was evaluated using various industrial dyes, including methylene blue, rhodamine B, and methyl orange, showing significant degradation rates within short time periods. Our results indicate that green-synthesized nanomaterials not only provide an effective photocatalytic platform for the degradation of harmful dyes but also contribute to sustainable and eco-friendly environmental remediation strategies. This study highlights the potential of integrating green chemistry principles in the development of advanced photocatalytic materials for wastewater treatment applications.