Synthesis and catalytic application of Pt and Pt-Bi nanoparticles in graphite oxide

The mono- and bi-metallic catalysts based on noble metal nanoparticles (NPs) are the most used for the selective oxidation of organic molecules. The activity of catalysts based on Pt NPs is strongly improved by the Pt/Bi coupled systems, where the presence of Bi prevents the poisoning of Pt by O2 in strong oxidative environment. Using bi-metallic catalysts based, one of the challenges is the synthesis of bi-metallic coupled systems enhancing an uniform distribution of NPs on the support and reducing the metals loading as much as possible without influencing the activity.