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Novel Nanoscale Ceria–Platinum Composite Electrodes for Direct Alcohol Electro-Oxidation

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Abstract

A nanocrystalline Pt/CeO2 composite electrode is fabricated to study the electrochemical oxidation of methanol and ethanol. Three different methods have been developed for the preparation of the composite electrode and are compared in terms of their oxidation efficiencies. In general, all the electrode preparation methodologies show a great enhancement of the oxidation current for the alcohol. However, methods based on the electrodeposition of a ceria rich Pt matrix show the greatest effectiveness of alcohol oxidation. The enhancement of the anodic current is dependent on the particle loading and size distribution in the composite matrix. In general, ceria appears to be an effective alternative to ruthenium in direct alcohol fuel cells.

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Acknowledgments

The authors thank the Office of Research and Commercialization, The Nanoscience Technology Center, The College of Sciences and the Department of Chemistry at the University of Central Florida for their support. Díaz, Seal, Karakoti and Greenletch also wish to thank the Florida Space Grant Consortium for their support throughout a Florida Space Research and Education Grant Program. Seal acknowledges NSF CMII’s support throughout grant 0548815. Díaz also acknowledges UCF’s Materials Characterization Facility (AMPAC) at the University of Central Florida for their facilities.

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Authors and Affiliations

  1. Department of Chemistry, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL, 32816, USA

    Diego J. Díaz, Nathan Greenletch & Avni Solanki

  2. Nanoscience Technology Center, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL, 32816, USA

    Diego J. Díaz & Sudipta Seal

  3. Mechanical, Material and, Aerospace Engineering (MMAE) Department, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL, 32816, USA

    Ajay Karakoti & Sudipta Seal

  4. Advanced Materials Processing and Analysis Center (AMPAC), University of Central Florida, 4000 Central Florida Blvd., Orlando, FL, 32816, USA

    Sudipta Seal

Authors
  1. Diego J. Díaz
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  2. Nathan Greenletch
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  3. Avni Solanki
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  4. Ajay Karakoti
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  5. Sudipta Seal
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Correspondence to Diego J. Díaz.

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Díaz, D.J., Greenletch, N., Solanki, A. et al. Novel Nanoscale Ceria–Platinum Composite Electrodes for Direct Alcohol Electro-Oxidation. Catal Lett 119, 319–326 (2007). https://doi.org/10.1007/s10562-007-9238-y

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  • DOI: https://doi.org/10.1007/s10562-007-9238-y

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