Silver nanoplates and nanowires by a simple chemical reduction method

This paper describes a simple preparation of single-crystalline Ag-nanoparticles including plates, and wires in water by truncated triangular particles for the first time during the reduction of [Ag(NH3)2]+ complex with glucose at room temperature. Silver particles were characterized by means of the conventional transmission electron microscopy (TEM) and UV–VIS spectroscopy. Cetyltrimethylammonium bromide, CTAB, plays a number of roles during the redox process by solubilizing the reactants, controlling the nucleation and/or growth of nanoparticles, stabilizing the thus-prepared Ag-nanoparticles and minimizing the formation of Ag2O, AgCl, and AgBr precipitates. It was found that the rate constant and absorbance of silver nanoparticles were sigmoidal to the concentration of silver nitrate.

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► Size and rates of Ag-nanoparticles formation strongly depends on the cetyltrimethylammonium bromide concentrations.
► Turnucated triangular nanoplates are formed after the irregular aggregation of silver nanoparticles.
► Silver nanoplates and nanowires are formed at different time intervals.
► Glucose concentrations have no effect on the shape of the silver nanoplates.