Chloride Ion Addition for Controlling Shapes and Properties of Silver Nanorods Capped by Polyvinyl Alcohol Synthesized using Polyol Method

摘要

We report our investigation on the effect of chloridions on controlling the shapes and properties of silver nanorods (AgNRs) synthesized using a polyol method. In this study,we used polyvinyl alcohol (PVA) as a capping agent and sodium chloride (NaCl) as a salt precursor and performed at the oil bath temperature of 140 ~□□C. The chloride ions originating from the NaCl serve to control the growth of the silver nanorods. Furthermore, the synthesized silver nanorods were characterized using SEM and XRD. The results showed that beside beingable to control the growth of AgCl atoms, the chloride ions were also able to control the growth of multi-twinned-particles into the single crystalline of silver nanorods by micrometer-length. At an appropriate concentration of NaCl, the diameter of silver nanorods decreased significantly compared to that of without chloride ion addition. This technique may be useful since a particular diameter of silver nanorods affects a particular application in the future.