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Methanol electrooxidation on carbon-supported Pt-WO3−x electrodes in sulphuric acid electrolyte

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Abstract

Electrooxidation of methanol has been studied in sulphuric acid electrolyte at 60°C on carbon-supported Pt-WO3−x electrodes employing varying amounts of WO3−x . It is found that the electrodes containing (3:1) Pt-WO3−x composite catalyst exhibit a higher catalytic activity towards methanol electrooxidation than platinized carbon electrodes without WO3−x . In the light of the XPS and XRD data on the carbon-supported (3:1) Pt-WO x sample, it is speculated that the WO x is present in the form of an oxyhydroxide, which can promote surface oxy-species on platinum by proton transfer.

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Authors and Affiliations

  1. Solid State and Structural Chemistry Unit, Indian Institute of Science, 560012, Bangalore, India

    A. K. Shukla & M. K. Ravikumar

  2. Institute CNR-TAE, Salita S. Lucia Sopra Contesse 39, S. Lucia, Messina, Italy

    S. Aricò, G. Candiano, V. Antonucci & N. Giordano

  3. Department of Chemistry, Bedson Building, University of Newcastle, NE1 7RU, Newcastle upon Tyne, Great Britain

    A. Hamnett

Authors
  1. A. K. Shukla
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  2. M. K. Ravikumar
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  3. S. Aricò
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  4. G. Candiano
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  5. V. Antonucci
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  6. N. Giordano
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  7. A. Hamnett
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Shukla, A.K., Ravikumar, M.K., Aricò, S. et al. Methanol electrooxidation on carbon-supported Pt-WO3−x electrodes in sulphuric acid electrolyte. J Appl Electrochem 25, 528–532 (1995). https://doi.org/10.1007/BF00573210

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  • DOI: https://doi.org/10.1007/BF00573210

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