Photocatalytic Organic Contaminant Degradation of Green Synthesized ZrO2 NPs and Their Antibacterial Activities

The green synthesis of metal oxide nanoparticles is an efficient, simple, and chemical-free method producing nanoparticles. present work reports the Murraya koenigii-mediated ZrO2 (ZrO2 NPs) their applications as a photocatalyst antibacterial agent. Capping stabilization were achieved by using koenigii leaf extract. optical, structural, morphological valance NPs characterized UV-DRS, FTIR, XRD, FESEM with EDX, TEM, XPS. An XRD analysis determined that have monoclinic structure crystallite size 24 nm. TEM images confirm spherical nature NPs, distributions on surfaces show lower agglomerations. showed high optical absorbance in UV region wide bandgap indicating surface oxygen vacancies charge carriers. presence Zr O elements O=Zr=O bonds was categorized EDX FTIR spectroscopy. plant molecules’ interface, bonding, binding energy, existence established from XPS analysis. photocatalytic degradation methylene blue examined under visible light irradiation. 94% toxic MB dye within 20 min. inhibition tested against S. aureus E. coli pathogens. Applications bio-synthesized including organic substance removal, pathogenic inhibitor development, catalysis, biomedical development explored.