GREEN SYNTHESIS OF SILVER NANOPARTICLES BY AZADIRACHTA INDICA PLANT

Abstract

Silver Nanoparticles (AgNPs) were synthesized from plant extracts of Azadirachta Indica (Neem) and silver salt (AgNO3) following the purely green approach. In this study we synthesized and analyzed the controllable synthesis of nanoparticles by changing different physico-chemical parameters like time reaction, plant extract concentration, pH and temperature. Synthesized AgNPs were also analyzed by absorption/photoluminescence spectroscopy, fourier transform infrared spectroscopy (FTIR), Energy Dispersive X-Ray Analysis (EDX) and scanning electron microscopy (SEM). The synthesized nanoparticles showed a strong absorption peak at around 400 to 450 nm due to strong surface plasmon resonance (SPR) exhibited by the silver nanoparticles. From the results obtained it can be concluded that the green synthesis approach is simple, economic, time saving and environment friendly as compared to the chemical and physical methods of synthesis. The AgNPs synthesized using this approach can be used in wide range of applications such as biomedical, sensor technology, optoelectronics, space technology and nanotechnology.