Plant-Based Synthesis of TiO_۲-NPs Using Papaver Rhoeas Leaf Extract: A Study of Photocatalytic and Antibacterial Activities

This study involved synthesizing titanium dioxide nanoparticles (TiO۲-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 TiO۲-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 ۱۷.۰۳ nm. Electron microscopy revealed particle dimensions ranging from ۴۰ to ۶۰ nm. The photocatalytic activity of TiO۲-NPs was evaluated by the degradation of methylene blue dye under UV light in an alkaline environment (pH = ۹). The results demonstrated that ۸۵% of the dye degradation was achieved under UV light within ۱۲۰ min, indicating excellent photocatalytic performance. Nonetheless, the biosynthesized TiO۲-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 TiO۲-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.

کلیدواژه ها:

Green synthesis ، TiO۲ Nanoparticles ، Photocatalytic activity ، Papaver Rhoeas ، X-ray diffraction