Visible-Light Photocatalytic Hydrogen Generation by Using Dye-Sensitized Graphene Oxide as a Photocatalyst

Authors

  • Marcos Latorre-Sánchez,

    1. Instituto Universitario de Tecnología Química, Univ. Politecnica de Valencia, Av. De los Naranjos s/n, 46022 Valencia (Spain), Fax: (+34) 96-3877809
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    • Contributed equally to this work.

  • Cristina Lavorato,

    1. Instituto Universitario de Tecnología Química, Univ. Politecnica de Valencia, Av. De los Naranjos s/n, 46022 Valencia (Spain), Fax: (+34) 96-3877809
    2. Department of Chemical and Materials Engineering, University of Calabria, Via P. Bucci 44A, 87036 Rende, CS (Italy)
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    • Contributed equally to this work.

  • Marta Puche,

    1. Instituto Universitario de Tecnología Química, Univ. Politecnica de Valencia, Av. De los Naranjos s/n, 46022 Valencia (Spain), Fax: (+34) 96-3877809
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  • Prof. Dr. Vicente Fornés,

    1. Instituto Universitario de Tecnología Química, Univ. Politecnica de Valencia, Av. De los Naranjos s/n, 46022 Valencia (Spain), Fax: (+34) 96-3877809
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  • Prof. Dr. Raffaele Molinari,

    1. Department of Chemical and Materials Engineering, University of Calabria, Via P. Bucci 44A, 87036 Rende, CS (Italy)
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  • Prof. Dr. Hermenegildo Garcia

    Corresponding author
    1. Instituto Universitario de Tecnología Química, Univ. Politecnica de Valencia, Av. De los Naranjos s/n, 46022 Valencia (Spain), Fax: (+34) 96-3877809
    • Instituto Universitario de Tecnología Química, Univ. Politecnica de Valencia, Av. De los Naranjos s/n, 46022 Valencia (Spain), Fax: (+34) 96-3877809
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Abstract

Dye-sensitized graphene oxide is able to generate hydrogen from water/methanol mixtures (80:20) by using visible or solar light. The most efficient photocatalyst tested contained a tris(2,2-bipyridyl) ruthenium(II) complex incorporated in the interlayer spaces of a few layers of graphene oxide with a moderate degree of oxidation. The graphene oxide-based photocatalyst does not contain noble metals and we have determined that it is two orders of magnitude more active than catalysts based on conventional titania.

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