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A simple electrochemical method to produce gold nanoparticles (AuNPs) in aqueous media is presented. This method is based on the potentiostatic reduction of auric ions in the bulk of a potassium nitrate solution containing poly(ethylene glycol) (PEG20,000) as a stabilizer. The electroreduction process is obtained when a negative polarization potential is applied to the system. To our knowledge, this is the first time that PEG20,000 is used as a stabilizer, and its influence on the synthesis of gold nanoparticles is examined. The analysis and characterization of the synthesized AuNPs by cyclic voltammetry, XRD and TEM is presented.

Synthesis of Gold Nanoparticles in Aqueous Solutions by Electrochemical Reduction Using poly(ethylen glicol) as Stabilizer