chemistry department, iran university of science and technology^* iran of science and technology university^**
○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.