Effect of Ascorbic Acid Concentration on the Stability of Tartrate-Capped Silver Nanoparticles

In this work, tartrate-capped silver nanoparticles (AgNPs) by reducing Ag+ ions into Ag0 using L-ascorbic acid and capping disodium tartrate have been prepared. The reaction was carried out at room temperature in an alkaline medium of pH 11 to obtain a rapid one-step green synthesis method. effect concentration on the preparation studied investigate their impact particle size, morphology, stability AgNPs. obtained capped AgNPs SPR absorbance 390–410 nm. They spherical shape, as confirmed TEM. Increasing concentrations from 25 mM 100 200 leads 27, 17, nm size distributions. give zeta potential –33.5, –20.8, –21.3, respectively. After week, decreasing peaks were 0.151, 0.0105, 0.336 a.u. optimum mM, indicated smallest FWHM point. Thus, we may conclude that lower or higher levels agents resulted low stability. Therefore, controlling is important parameter. A sufficient appropriate agent can produce good nanoparticle essential for further application.