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Synthesis and characterization of Pt-MoO x -TiO2 electrodes for direct ethanol fuel cells

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Abstract

To enhance the CO-tolerance performance of anode catalysts for direct ethanol fuel cells, carbon nanotubes were modified by titanium dioxide (donated as CNTs@TiO2) and subsequently served as the support for the preparation of Pt/CNTs@TiO2 and Pt-Mo/CNTs@TiO2 electrocatalysts via a UV-photoreduction method. The physicochemical characterizations of the catalysts were carried out by using X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and infrared spectroscopy of adsorbed probe ammonia molecules. The electrocatalytic properties of the catalysts for methanol oxidation were investigated by the cyclic voltammetry technique. The results show that Pt-Mo/CNTs@TiO2 electrode exhibits the highest performance in all the electrodes. It is explained that, the structure, the oxidation states, and the acid-base properties of the catalysts are influenced due to the strong interaction between Ti and Mo species by adding TiO2 and MoO x to the Pt-based catalysts.

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Authors and Affiliations

  1. Institute of Modern Catalyst, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China

    Xiu-yu Wang, Jing-chang Zhang & Hong Zhu

  2. Department of Chemical Engineering, University of Ottawa, Ottawa, 660673399, Canada

    Xu-dong Cao

  3. School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China

    Yuan-sheng Jiang

Authors
  1. Xiu-yu Wang
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  2. Jing-chang Zhang
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  3. Xu-dong Cao
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  4. Yuan-sheng Jiang
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  5. Hong Zhu
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Correspondence to Jing-chang Zhang.

Additional information

This work was financially supported by the International Science and Technology Cooperation Program of China (No. 2006DFA61240).

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Wang, Xy., Zhang, Jc., Cao, Xd. et al. Synthesis and characterization of Pt-MoO x -TiO2 electrodes for direct ethanol fuel cells. Int J Miner Metall Mater 18, 594–599 (2011). https://doi.org/10.1007/s12613-011-0483-0

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  • DOI: https://doi.org/10.1007/s12613-011-0483-0

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