Silver nanoparticles synthesis and characterization using Turkevich method / Ahmad Al-Amin Ahamad Husaini

The synthesis of silver nanoparticles (AgNPs) has been extensively studied due to their unique optical properties and various potential applications. However, issues such as agglomeration and impurities during synthesis can affect the optical properties and hinder their functionality. One commonly used chemical reduction method for synthesizing AgNPs is the Turkevich method. In this study, AgNPs were synthesized from silver nitrate (AgNO3) using the Turkevich method by varying the molar concentration of trisodium citrate (C6ft0?Na3) at 0.5 g. 1.0 g. and 1.5 g in 20 mL of distilled water. The molar concentration of AgNO3 was, kept constant at 0.034g in 100 mL of distilled water. The synthesis process was conducted at reaction temperatures of 70°C, 80°C, and 90°C, with a constant stirring speed of 900 rpm. The synthesized AgNPs were characterized using UV-Vis spectroscopy to assess their optical properties, field emission scanning election microscopy (FESEM) was employed to analyze their surface morphology, shape, and size distribution and energy dispersive x-ray spectroscopy (EDX) used to observe the elemental composition of material. Results shows that synthesizing AgNPs at reaction temperature 90oC resulted in smaller AgNPs with more consistent optical properties. Higher stabilizer concentration while reducing the size of nanoparticles leads to aggregation due to the formation of insufficient silver nuclei. The synthesis process was carefully controlled to ensure the successful formation of AgNPs with the desired properties.