Temperature effect on the synthesis of Au-Pt bimetallic nanoparticles

Pt-Au bimetallic nanoparticles are synthesized by the polyol method and stabilized with poly(vinylpyrrolidone), modifying the temperature of synthesis. It was observed that at lower temperatures no bimetallic nanoparticles were detected but as the temperature increased bimetallic nanoparticles started to appear, commonly obtaining core-shell nanoparticles, always covered by the polymer.