OICC Press Journal of Theoretical and Applied Physics 2251-7235 18 1 2024 01 01 The effect investigation of various parameters on the growth of silver nanoparticles via atmospheric pressure plasma 10.57647/J.JTAP.2024.1801.08 EN Zohreh Dehghani Plasma and Fusion Research School, Nuclear Science and Technology Research Institute, Tehran, Iran Elnaz Khalilzadeh Plasma and Fusion Research School, Nuclear Science and Technology Research Institute, Tehran, Iran Journal Article 2024 01 01 In this work atmospheric pressure plasma has been used for the synthesis of silver (Ag) nanoparticles immersed in liquid. we study the effects of various parameters such as the electrolyte, the process time, and the applied electric current on the synthesis of Ag nanoparticles. The products are analyzed by transmission electron microscopy (TEM), X-ray diffraction (XRD) and UV-Vis spectroscopy. The results obtained show that the parameters mentioned have a major influence on the size and number of nanoparticles produced. In this study, the absorption peak of the Ag nanoparticles is at a wavelength of 420 nm. Moreover, the size of the particles is found between 10-20 nm. It is worth mentioning that there is an inverse relationship between the ethylene glycol concentration and the nanoparticle size. As the ethylene glycol concentration in the electrolyte increases, the nanoparticle size decreases. It is also expected that the morphology and size of the nanoparticles will become more uniform as the reaction time increases.