Zinc-Salt-Mediated Synthesis, Growth Kinetic, and Shaped Evolution of Silver Nanoparticles

الملخص EN

We report the synthesis of various shaped silver nanoparticles mediated by ZnCl2 salt.

It has been demonstrated that the salt, PVP/AgNO3 mole ratio, and the type of polyol (EG, DEG,and GL) significantly determined twinning probability, which is an index of silver seed growth origin.

High twining probability arising from low PVP/Ag+ ratio and 50 mole% salt favours 1D grown nanowires and nanorods, whereas low twining amidst high mole% salt (150) in DEG offered 2D grown nanoflakes and nanosheets.

Other shaped silver nanoparticles have been found.

Accidentally, we arrived at a core-shell heterostructure of Ag-ZnO nanocomposite with Ag core enrichment when mole% of the salt was made up to 300.

Growth kinetic of nanosphere obtained was monitored, and effect of salt mediation was found crucial.

Structural evolution of shaped Ag nanoparticles and nanocomposites have been monitored using XRD, SEM, EDX, TEM, and UV/vis.