Pt-Ru@CP-MWNT catalysts were prepared by radiolytic deposition of Pt-Ru
nanoparticles on conduction polymer (CP) coated multi walled carbon nanotubes (MWNTs) surfce.
Three different types of conducting polymers; polypyrrole(PPy), polyaniline(PANI), and
polythiophene (PTh), were coated on the MWNTs surface by in situ polymerization. Then Pt-Ru
nanoparticles were deposited onto CP-MWNTs composite by the reduction of metal ions using
gamma-irradiation to obtain Pt-Ru@CP-MWNT catalysts. The size, morphology and composition of
Pt-Ru@CP-MWNT catalysts were characterized by SEM, TEM and elemental analysis. The catalytic
efficiency of Pt-Ru@CP-MWNT catalyst was examined for CO stripping. Pt-Ru@PPy-MWNT and
Pt-Ru@PANI-MWNT electrodes show enhanced activity for electrooxidation of CO and methanol
over Pt-Ru@PTh-MWNT catalyst.
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