Iranian Nanotechnology Society International Journal of Nanoscience and Nanotechnology 1735-7004 4 1 2008 12 01 Effects of protective agents (PVA & PVP) on the formation of silver nanoparticles 3 12 3992 EN B. Sadeghi Department of Chemistry, Faculty of science, Islamic Azad University, Tonekabon Branch, Tonekabon, I. R. Iran M. A. S. Sadjadi Department of Chemistry, Faculty of science, Islamic Azad University, Science and research branch, Hessarak, Tehran, I. R. Iran A. Pourahmad Department of Chemistry, Faculty of science, Islamic Azad University, Rasht Branch, Rasht, I. R. Iran Journal Article 2008 05 28 In this study silver/poly vinyl alcohol (PVA) and silver/poly vinyl pyrrolidone (PVP) Nanocomposites were prepared via reduction of silver salt by employing DMF (N, N`- dimethyl formamide) as a reducing agent. Effects of protective agents such as PVA and PVP were also described here. We show that the acidic pH of PVP solution also affects the interaction between protective agents and silver nanoparticles. The nanoparticles were characterized by ultra violet-visible spectroscopy (UV-vis), FTIR spectroscopy, X-ray diffraction (XRD) and transmission electron microscopy (TEM). From the figures, it can be concluded that PVP is somewhat better than PVA for preventing silver nanoparticles from their agglomeration. https://www.ijnnonline.net/article_3992_0de5d1a081a3095d62b416e44e055e7a.pdf