The effect of microwave irradiation time on appearance properties of silver nanoparticles

摘要

In this paper, synthesis of silver nanostructures was carried out via microwave (MW) irradiation technique in alcoholic media (polyols vis). When silver nitrate is reduced by ethylene glycol, In the presence of polyvinylpyrrolidon (PVP), polygonal silver nanoparticles will produce in a short time. The results were that shown some parameters such as temperature, irradiation time, concentration of AgNO_3 and PVP and type of the irradiation cycle have important roles on determining of particle size and morphology of the final products. Also, the effect of MW irradiation time has been studied by transmission electron microscope (TEM) and UV.VIS analyses on the morphology and particles size. TEM observations reveal the fact that the size of silver nanoparticles is estimated to be significantly smaller than 22 nm.