Abstract
Silver particles were synthesized by reducing silver ions with copper metal. The as-synthesized silver particles were characterized by scanning electron microscope (SEM). The effects of synthesis conditions on particle morphology were studied. The results showed that dendritic structures were readily synthesized when the silver nitrate solution kept stationary. The low concentration of silver ion was benefit to get perfect silver dendrite. The use of ammonium made the silver shape transferring from dendritic to spherical. The ultrasonic wave accelerated the diffusion of mass and produced spherical silver particles. These results indicated that dendritic silver particles were easy to obtain in non-equilibrium condition while the shape of silver rod-like or spherical was easy to get in equilibrium condition. The morphology and the size of silver particles depend on the synthesis conditions. The formation mechanism of dendritic silver particles were also deduced.
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