The Performance of p-Aminosalicylic Acid As Reducing and Stabilizing Agent in Silver Nanoparticles Synthesis

Abstract

In this study, silver nanoparticles (AgNPs) were successfully synthesized using p-aminosalicylic acid as a reducing and stabilizing agent simultaneously. The AgNPs was synthesized by mixing silver nitrate solution as a precursor with the pH adjusted by p-aminosalicylic acid solution and heating it in a boiling water bath. The formed AgNPs were analyzed using UV-Vis spectrophotometry to evaluate their SPR absorbance in the wavelength range of 400-500 nm. The optimum reaction time is 10 min and the optimum pH is 11. The AgNPs with the optimum synthesis condition have average size of 32.3 nm when characterized using PSA, spherical morphology when characterized using TEM, and face-centered cubic crystal when chara­cterized using XRD. The formed AgNPs had good stability for more than 2 months. The mechanism of silver ion reduction and AgNPs stabilization by p-aminosalicylic acid were also proposed in the paper based on the FTIR analysis result.