Carbon nanotubes-Nafion composites as Pt-Ru catalyst support for methanol electro-oxidation in acid media |
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| Authors: | Shengzhou Chen Fei Ye Weiming Lin |
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| Institution: | aSchool of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China;bSchool of Chemical and Energy Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China |
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| Abstract: | Carbon nanotubes-Nafion (CNTs-Nafion) composites were prepared by impregnated CNTs with Nafion in ethanol solution and characterized by FT-IR. Pt-Ru catalysts supported on CNTs-Nafion composites were synthesized by microwave-assisted polyol process. The physical and electrochemical properties of the catalysts were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), CO stripping voltammetry, cyclic voltammetry (CV) and chronoamperometry (CA). The results showed that the Nafion incorporation in CNTs-Nafion composites did not significantly alter the oxygen-containing groups on the CNTs surface. The Pt-Ru catalyst supported on CNTs-Nafion composites with 2 wt% Nafion showed good dispersion and the best CO oxidation and methanol electro-oxidation activities. |
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| Keywords: | carbon nanotubes-Nafion composites Pt-Ru catalysts methanol electro-oxidation |
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