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Visible‐Light Photocatalytic Hydrogen Generation by Using Dye‐Sensitized Graphene Oxide as a Photocatalyst |
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| Authors: | Marta Puche Prof. Dr. Vicente Fornés Prof. Dr. Raffaele Molinari Prof. Dr. Hermenegildo Garcia |
| Affiliation: | 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) |
| 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. |
| Keywords: | dyes/pigments graphene photochemistry visible light water splitting |