Biological synthesis of silver nanoparticles using aqueous leaf extract of Capparis decidua (FORSK.) EDGEW: A better alternative

We biosynthesized the silver nanoparticles (AgNPs) by monitoring the conversion using electrochemistry method. In this study, a simple and rapid biosynthesis of AgNPs using aqueous leaf extract of Capparis decidua have been expected. Stable AgNPs were formed by treating solution using the plant extracts as a reducing agents. Biosynthesized silver nanoparticles were characterized by UV-visible Spectroscopy, Transmission Electron Microscopy (TEM) and Fourier Transform Infra-Red Spectroscopy (FTIR). The UV-visible spectroscopy showed the maximum absorbance at 452 nm. The stability of nanoparticles after two months depicts almost no shift in the absorption intensity and the absorption maxima which indicated that the particle size remained same. The broadening of peak indicated that the particles are polydispersed. TEM analysis of silver nanoparticles (1.5-25 nm) showed formation of circular, triangular, rectangular and oval shaped nanoparticles. Very small size range of silver nanoparticles may make it a good antimicrobial agent. The stabilization of the nanoparticle is believed to occur by the functional groups like amines, amides, alkynes, alkenes, bromoalkanes etc. as identified by FTIR analysis. The absorbance bands analysis in bioreduction are observed in the region of 375-4000cm. This environmentally friendly method provides faster rates of biosynthesis and can potentially be used in various areas such as cosmetics, food, medicals and antibacterial effects.