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Synthesis of High-Surface-Area Platinum Nanotubes Using a Viral Template

Authors

  • Marcin Ł. Górzny,

    1. School of Physics and Astronomy University of Leeds Woodhouse Lane, Leeds LS2 9JT (UK)
    2. Present address: School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
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  • Alex S. Walton,

    1. School of Physics and Astronomy University of Leeds Woodhouse Lane, Leeds LS2 9JT (UK)
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  • Stephen D. Evans

    Corresponding author
    1. School of Physics and Astronomy University of Leeds Woodhouse Lane, Leeds LS2 9JT (UK)
    • School of Physics and Astronomy University of Leeds Woodhouse Lane, Leeds LS2 9JT (UK).
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Abstract

A novel method for the synthesis of high-active-surface-area, platinum–tobacco mosaic virus (Pt–TMV) nanotubes is presented. A platinum salt is reduced to its metallic form on the external surface of a rod-shaped TMV by methanol, which serves as a solvent and reductant simultaneously. It was found that for the same Pt loading the Pt–TMV nanotubes had an electrochemically active surface area between 4 to 8 times larger than similarly sized Pt nanoparticles. A Pt–TMV catalyst displays greater stability in acidic conditions than those based on nanoparticles. When used as a catalyst for methanol oxidation, these Pt nanotubes display a 65% increase in catalytic mass activity compared to that based on Pt nanoparticles.

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