Green Synthesis of Silver Nanoparticles using Extract of Disporopsis Longifolia for Photocatalytic Degradation of Methylene Blue

: In this report, the silver Nanoparticles (AgNPs) were successfully synthesized in a simple one-pot method by the leaf and stem extract of Disporopsis longifolia as reducing, capping agents, and stabilizers for the first time. The optimal extract amount, AgNO 3 concentration, reaction temperature, and time for the AgNPs synthesis were identified using Ultraviolet-Visible (UV-Vis) spectroscopy. X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) were used to characterize the structure and morphology of the as-synthesized AgNPs. In addition, the characteristic vibration of the Ag-organic functional group was confirmed using Fourier Transform Infrared (FT-IR) spectroscopy. The as-synthesized AgNPs exhibited promising Methylene Blue (MB) photodegradation, resulting in approximately 100% removal after 240 min without any substantial silver leaching under the solar light. It is found that the AgNPs photocatalysis activity is improved by the synergy of the Disporopsis longifolia extract solution and can efficiently adapt to the photodegradation of organic dyes in industrial wastewater.