Two methods of preparation of Silver nanoparticles in 3-18 nm scale

chemistry department, iran university of science and technology* iran of science and technology university**
â—‹asal kiazadeh* Azadeh Tadjarodi**

Silver nanoparticles were synthesis in aqueous solution with NaBH4 and in alcoholic solution with CH3OH . In order to keep the silver particles in the nanometer range , polyvinylpyrrolidone (PVP) was used . The alcohol served both as solvent and reducing agent for silver ions and cause of slow reaction rate . The synthesis was carried out by microwave .The results were confirmed with TEM images and UV-Vis spectrum.