Plasma Syntheses of Carbon Nanotube-Supported Pt-Pd Nanoparticles

It is reported that the highly dispersed Pt nanoparticles on carbon nanotubes can be synthesized under mild conditions by in situ plasma treatment. The carbon nanotube was pretreated by O₂ plasma to transform into oxide carbon nanotubes (O-CNTs), and then it was mixed with the precursors (the mixture of H₂PtCl₆ and PdCl₆). After that, the O-CNTs and the precursors were simultaneously treated by H₂ plasma. The precursors were transformed into Pt-Pd nanoparticles (NPs) and the O-CNTs transformed into CNT. The synthesized CNT-based Pt-Pd nanoparticles were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. All the analysis showed that the Pt-Pd nanoparticles were deposited on CNT as a form of face-centered cubical structure.