Green synthesis of silver nanoparticles using latex extract of Thevetia peruviana: A novel approach towards poisonous plant utilization

Abstract

The development of green synthesis of nanoparticles has received increasing attention due to ease of preparation, less chemical handling and of ecofriendly nature. It is of considerable importance to expand their biological applications. Currently, a variety of inorganic nanoparticles with well-defined chemical composition, size and morphology have been synthesized by using different microorganisms, fungus, plant extracts and their applications in many cutting-edge technological areas have been explored. In the present study, silver nanoparticles (AgNPs) were successfully synthesized from AgNO3 through a simple green synthesis route using the latex of Thevetia peruviana as reducing as well as capping agent. Synthesized silver nanoparticles were characterized using UV-Vis spectrophotometer, FTIR, SEM-EDS, XRD and HRTEM. UV-Vis spectra showed absorption at 570 nm with a shoulder at 395 nm. FTIR spectra analysis confirmed the functional groups involved in the silver nanoparticles formation. X-ray diffraction pattern of silver nanoparticles exhibited the diffraction angle at 34.48°, 40.12° and 45.39° which is corresponding to (222), (400) and (420) Braggs reflection planes respectively with interplaner spacing of 2.59 Å obtained by HRTEM. TEM analysis showed the particles are spherical in nature with its size distribution between 10 and 30 nm.