Synthesis, characterization and photocatalytic application of Sophora mollis leaf extract mediated silver nanoparticles

This study reports green synthesis and characterization of silver nano-particles (Ag NPs) from Sophora mollis leaf extract. The use of S. mollis extract for preparation of Ag NPs was investigated using different techniques. Dark brown color indicates formation of nanoparticles. Fourier transform infra-red (FTIR) analysis revealed that plant extract act as a reducing and capping agent. Morphological aspects of Ag NPs were ascertained by means of SEM studies. Energy dispersive and FTIR spectroscopy results showed chemical composition and plant extract func-tionality respectively. X-ray diffraction (XRD) analysis showed particle size of 70 nm. Antibacterial activity of NPs was investigated by disc diffusion and minimum inhibitory concentration method. Antioxidant activity of NPs was shown by DPPH assay. The photo catalytic efficiency of synthesized Ag NPs was evaluated by degradation of methylene blue (MB) dye under UV irradiation. Ag NPs degraded MB dye up to 88% in 160 min. It is concluded that these NPs could be employed for degradation of toxic industrial effluents. Result proved the green synthesis of Ag NPs from S. mollis extract is clean, economical and safe method.

Automated summary

This study presents the green synthesis and characterization of silver nanoparticles using Sophora mollis leaf extract. The nanoparticles showed excellent antibacterial and antioxidant activities, as well as efficient photocatalytic degradation of methylene blue dye. The results suggest that the green synthesis of Ag NPs from S. mollis extract is a clean, economical, and safe method for potential industrial wastewater treatment applications.