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Photocatalytic Hydrogen Production with Copper Photosensitizer–Titanium Dioxide Composites

Authors

  • Dr. Michael Karnahl,

    1. Leibniz Institute for Catalysis at the University of Rostock (LIKAT), Albert-Einstein-Straße 29a, 18059 Rostock (Germany), Fax: (+49) 381-1281-51113
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  • Dr. Esteban Mejía,

    1. Leibniz Institute for Catalysis at the University of Rostock (LIKAT), Albert-Einstein-Straße 29a, 18059 Rostock (Germany), Fax: (+49) 381-1281-51113
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  • Dr. Nils Rockstroh,

    1. Leibniz Institute for Catalysis at the University of Rostock (LIKAT), Albert-Einstein-Straße 29a, 18059 Rostock (Germany), Fax: (+49) 381-1281-51113
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  • Dr. Stefanie Tschierlei,

    1. Institute of Physics, University of Rostock, Universitätsplatz 3, 18055 Rostock (Germany)
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  • Dr. Shu-Ping Luo,

    1. State Key Laboratory Breeding Base of Green Chemistry, -Synthesis Technology, Zhejiang University of Technology, 310014 Hangzhou (China)
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  • Dr. Kathleen Grabow,

    1. Leibniz Institute for Catalysis at the University of Rostock (LIKAT), Albert-Einstein-Straße 29a, 18059 Rostock (Germany), Fax: (+49) 381-1281-51113
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  • Dr. Angela Kruth,

    1. Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Straße 2, 17489 Greifswald (Germany)
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  • Dr. Volker Brüser,

    1. Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Straße 2, 17489 Greifswald (Germany)
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  • Dr. Henrik Junge,

    1. Leibniz Institute for Catalysis at the University of Rostock (LIKAT), Albert-Einstein-Straße 29a, 18059 Rostock (Germany), Fax: (+49) 381-1281-51113
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  • Prof. Dr. Stefan Lochbrunner,

    1. Institute of Physics, University of Rostock, Universitätsplatz 3, 18055 Rostock (Germany)
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  • Prof. Dr. Matthias Beller

    Corresponding author
    1. Leibniz Institute for Catalysis at the University of Rostock (LIKAT), Albert-Einstein-Straße 29a, 18059 Rostock (Germany), Fax: (+49) 381-1281-51113
    • Leibniz Institute for Catalysis at the University of Rostock (LIKAT), Albert-Einstein-Straße 29a, 18059 Rostock (Germany), Fax: (+49) 381-1281-51113

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Abstract

A series of heteroleptic copper photosensitizers [(equation image)Cu(equation image(SO3Na)2)]+ containing sulfonate anchor groups is described. In the presence of titanium dioxide they form composites, which are active photosensitizers in the light driven reduction of protons. Further stabilization of these systems is achieved by encapsulation within a plasma-polymerized allylamine (PPAAm) layer. The resulting PPAAm-CuPS-TiO2-composites exhibit a strong absorption in the visible region of the light. Photocatalytic hydrogen production is performed by using only non-noble metals. In the presence of an iron reduction catalyst a maximum turnover number of 2452 is obtained.

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