فهرست نشریات علمی دسترسی آزاد ایران

This study involved synthesizing titanium dioxide nanoparticles (TiO2-NPs) using an aqueous extract of Papaver rhoeas leaves, which acted as a stabilizing agent in a green synthesis process. Multiple analytical techniques were used to characterize the resulting TiO2-NPs, including ultraviolet-visible, FT-IR, and X-ray diffraction (XRD) spectroscopy, along with Field Emission Scanning Electron Microscopy (FESEM). The XRD results verified both the purity and anatase crystal structure. Using the Debye-Scherrer formula, the crystal size was determined to be 17.03 nm. Electron microscopy revealed particle dimensions ranging from 40 to 60 nm. The photocatalytic activity of TiO2-NPs was evaluated by the degradation of methylene blue dye under UV light in an alkaline environment (pH = 9). The results demonstrated that 85% of the dye degradation was achieved under UV light within 120 min, indicating excellent photocatalytic performance. Nonetheless, the biosynthesized TiO2-NPs showed no inhibitory effects against E. coli and S. aureus. The green synthesis approach and effective photocatalytic performance highlight the potential of Papaver rhoeas leaf-stabilized TiO2-NPs as eco-friendly photocatalysts for dye degradation, but their lack of antibacterial activity indicates that further optimization or modification may be required for antibacterial applications.