The silver nanoparticle synthesis machine basedon the plasma method comprises of a high voltage power supply, a water micro-pump, a reaction chamber containing molybdenum cathode and silver anode emerged in liquid water. Plasma was generated between these two sinked adjacent electrodes. Anode material is dissolved into water as positive ions and immediately reduced in plasma environment to form nanoparticles. In our experiment, the solution’s color rapidlychanges from that of pure water to yellow one, showing the successful synthesis of nanoparticles. The particle production rates were measured by weighing the anode before and after plasma. Theyholdrather constant, about 3.3mg/min. The UV - vis absorption spectrum of the nano solution exhibits a peak at 408nm coresponding to the surface plasma resonant of silver nanoparticles. According to the TEM picture, nano particles in the solution are in spherical form and quite homogenous, about 10nm. It is able to use the silver nanoparticle synthesis machine with simple structure for agricultural and aquaculture families because it is easy to operate and raw materials consist of bulk silver and distilled water.

Keywords: Machine; silver nano particles; plasma method.