111 oriented gold nanoplatelets on multilayer graphene as visible light photocatalyst for overall water splitting

Diego Mateo, Iván Esteve-Adell, Josep Albero, Juan F. Sánchez Royo, Ana Primo and Hermenegildo Garcia ()
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Diego Mateo: Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas
Iván Esteve-Adell: Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas
Josep Albero: Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas
Juan F. Sánchez Royo: ICMUV, Instituto de Ciencia de Materiales, Universidad de Valencia
Ana Primo: Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas
Hermenegildo Garcia: Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas

Nature Communications, 2016, vol. 7, issue 1, 1-8

Abstract: Abstract Development of renewable fuels from solar light appears as one of the main current challenges in energy science. A plethora of photocatalysts have been investigated to obtain hydrogen and oxygen from water and solar light in the last decades. However, the photon-to-hydrogen molecule conversion is still far from allowing real implementation of solar fuels. Here we show that 111 facet-oriented gold nanoplatelets on multilayer graphene films deposited on quartz is a highly active photocatalyst for simulated sunlight overall water splitting into hydrogen and oxygen in the absence of sacrificial electron donors, achieving hydrogen production rate of 1.2 molH2 per gcomposite per h. This photocatalytic activity arises from the gold preferential orientation and the strong gold–graphene interaction occurring in the composite system.

Date: 2016
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DOI: 10.1038/ncomms11819

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