Growth-controlled synthesis of polymer-coated colloidal-gold nanoparticles using electrospray-based chemical reduction

In this study, the controlled nucleation and growth of gold nanoparticles (GNPs) were investigated using a self-repelled mist in liquid chemical reaction environment. An electrospray-based reduction method was conducted aqueous region at room temperature to synthesize polymeric-stabilized nanoparticles. The electrospray technique used atomize hydrogen tetrachloraurate (III) (HAuCl4) precursor solution into electrostatically charged droplets. atomized droplets dispersed an bath containing L-ascorbic acid as reducing agent polyvinylpyrrolidone (PVP) stabilizer. effect parameters, specifically flow rate droplet size, well conditions such concentration reactants, pH, stabilizer (PVP), investigated. mean diameter GNPs increased from around 4 9 nm with increase rate, current passing through jet. Spherical monodispersed synthesized relatively high 2 mL/h moderate mM solution. smallest-sized GNP monodispersity obtained pH 10.5 presence PVP. It is expected that continuous mass production engineered other noble metal could be established for scaling up nanoparticle via proposed method.