PJB-2025-334
ECO-FRIENDLY SYNTHESIS OF SILVER NANOPARTICLES FROM THE INVASIVE NICOTIANA GLAUCA: EXPLORING THEIR ANTIFUNGAL EFFICACY
AHMED M. ABBAS
Abstract
This study explores the eco-friendly synthesis of silver nanoparticles (AgNPs) using an aqueous extract derived from the leaves of Nicotiana glauca. The synthesized AgNPs were thoroughly characterized using various analytical techniques, including X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, dynamic light scattering (DLS), and transmission electron microscopy (TEM). DLS analysis confirmed the nanoparticles' monodispersity and stability, with an observed mean hydrodynamic diameter of 60.00 nm. XRD patterns indicated a face-centered cubic crystalline structure, with an average crystallite size of 42.58 nm. TEM imaging revealed that the nanoparticles were predominantly spherical, with sizes ranging from 50 nm to 55 nm. The AgNPs exhibited significant antifungal activity, with the largest inhibition zone measuring 26.0 mm against Fusarium solani, followed by 23.1 mm for Aspergillus niger. These findings demonstrate that AgNPs synthesized from N. glauca extract possess potent antifungal properties, positioning them as a promising alternative for combating fungal pathogens. Furthermore, this study highlights the innovative use of invasive plant species like N. glauca as a sustainable and environmentally friendly resource for nanoparticle production. By promoting green nanotechnology, this work contributes to biodiversity conservation efforts while providing a practical approach to managing invasive alien plants
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