Lilachjini SAdhikari A. A. D. MAmnah M. H. FHettiarachchi C. V2025-09-192025-09-192025-05https://dr.ichemc.ac.lk/handle/123456789/453Page 69 Abstract No: 2025_329Untreated dyes found in industrial effluent damage aquatic habitats and diminish biodiversity. Therefore, dye-containing hazardous substances must be treated before being disposed of. Nowadays, TiO2 , ZnO, metal niobates and titanates, as well as other semiconductors with a large band gap, serve as the foundation for extensively used UV photocatalytic materials with high performance.enZirconiumHafniumSchiff base ligandphotocatalysisNovel Zr(IV) and Hf(IV) – Schiff base complexes as white light photocatalysts for the degradation of methylene blueArticle