Green synthesis of nano platinum using naturally occurring polyphenols

We report a simple one step green synthesis of platinum nanoparticles using naturally occurring plant polyphenols obtained from an aqueous extract of Terminalia chebula. No surfactant/stabilizing agent was employed in this method. All the platinum nanoparticles obtained were in the size range of less than 4 nm. The polyphenols responsible for reduction were identified using high performance liquid chromatography. We have demonstrated reduction of Pt+4 to Pt-0 and also how the oxidised polyphenols were responsible for stabilizing platinum nanoparticles.