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Low-Overpotential Water Oxidation by a Surface-Bound Ruthenium-Chromophore–Ruthenium-Catalyst Assembly

Authors

  • Michael R. Norris,

    1. Department of Chemistry, University of North Carolina at Chapel Hill, CB#3290 Chapel Hill, NC 27599-3290 (USA)
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  • Dr. Javier J. Concepcion,

    1. Department of Chemistry, University of North Carolina at Chapel Hill, CB#3290 Chapel Hill, NC 27599-3290 (USA)
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  • Dr. Zhen Fang,

    1. Department of Chemistry, University of North Carolina at Chapel Hill, CB#3290 Chapel Hill, NC 27599-3290 (USA)
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  • Prof. Joseph L. Templeton,

    1. Department of Chemistry, University of North Carolina at Chapel Hill, CB#3290 Chapel Hill, NC 27599-3290 (USA)
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  • Prof. Thomas J. Meyer

    Corresponding author
    1. Department of Chemistry, University of North Carolina at Chapel Hill, CB#3290 Chapel Hill, NC 27599-3290 (USA)
    • Department of Chemistry, University of North Carolina at Chapel Hill, CB#3290 Chapel Hill, NC 27599-3290 (USA)

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  • This work was wholly funded by the UNC Energy Frontier Research Center (EFRC) “Center for Solar Fuels”, an EFRC funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award DE-SC0001011.

Abstract

original image

Ein an nanoITO gebundenes Assoziat aus Rutheniumchromophor und -katalysator (siehe Bild) fungiert als Elektrokatalysator bei der Wasseroxidation, wobei in 0.1 M HClO4 O2 bei einem Überpotential von 230 mV entwickelt wird. Die Potentialantwort der Elektrode spricht dafür, dass 3 e/2 H+-oxidiertes [[BOND]RuaIII[BOND]RubIV[DOUBLE BOND]O]5+ die aktive Form des Assoziats ist. ITO=Indium-Zinn-Oxid.

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