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Effect of third metal on the electrocatalytic activity of PtRu/Vulcan for methanol electro-oxidation

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Abstract

The effect of a third metal on the activity of PtRu/Vulcan toward methanol oxidation reaction (MOR) is studied. An efficient method to prepare ternary catalysts was used, which allows the introduction of the third metal to PtRu/Vulcan without altering its particle size or dispersion. Ni, Mo, Co, and Ir were chosen and added to PtRu/Vulcan, based on theoretical and experimental literature results, anticipating enhancement in the catalytic activity of PtRu/Vulcan. The composition of the third metal can be varied from trace to considerable amounts. Transmission electron microscopy and energy-dispersive X-ray analysis were used to determine the particle size, dispersion, and the composition of the ternary catalysts. Cylic voltammetry, chronoamperometry, and CO-stripping voltammetry were used to analyze and compare the activities of the catalysts at 25 °C. It has been found that the addition of even trace amounts of third metal significantly affects the catalytic activity of PtRu toward MOR.

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Acknowledgments

The authors are grateful to Mr. C. Uliana of the University of Genova for his help with TEM and to Mr. P. Narducci of the University of Pisa for performing EDX analyses. This research was funded by the Italian MIUR.

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  1. Sivakumar Pasupathi

    Present address: SAIAMC, University of the Western Cape, Modderdam Road, Bellville 7535, Cape Town, South Africa

Authors and Affiliations

  1. Dipartimento di Ingegneria Chimica, Chimica Industriale e Scienza dei Materiali, Università di Pisa, 56126, Pisa, Italy

    Sivakumar Pasupathi & Vincenzo Tricoli

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  1. Sivakumar Pasupathi
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  2. Vincenzo Tricoli
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Correspondence to Vincenzo Tricoli.

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Pasupathi, S., Tricoli, V. Effect of third metal on the electrocatalytic activity of PtRu/Vulcan for methanol electro-oxidation. J Solid State Electrochem 12, 1093–1100 (2008). https://doi.org/10.1007/s10008-007-0441-y

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  • DOI: https://doi.org/10.1007/s10008-007-0441-y

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