An Efficient RuII–RhIII–RuII Polypyridyl Photocatalyst for Visible‐Light‐Driven Hydrogen Production in Aqueous Solution |
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| Authors: | Dr Thibaut Stoll Dr Marcello Gennari Dr Jérôme Fortage Dr Carmen E Castillo Dr Mateusz Rebarz Dr Michel Sliwa Dr Olivier Poizat Dr Fabrice Odobel Dr Alain Deronzier Dr Marie‐Noëlle Collomb |
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| Institution: | 1. Université Joseph Fourier Grenoble 1/CNRS, Département de Chimie Moléculaire, UMR 5230, Institut de Chimie Moléculaire de Grenoble, FR‐CNRS‐2607, Laboratoire de Chimie Inorganique Rédox, BP 53, 38041 Grenoble Cedex 9 (France);2. Laboratoire de Spectrochimie Infrarouge et Raman, UMR 8516, CNRS/Université Lille 1 Sciences et Technologies, 59655 Villeneuve d'Ascq Cedex (France);3. CEISAM, UMR 6230, Université de Nantes/CNRS, 2 rue de la Houssinière, 44322 Nantes Cedex 3 (France) |
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| Abstract: | The development of multicomponent molecular systems for the photocatalytic reduction of water to hydrogen has experienced considerable growth since the end of the 1970s. Recently, with the aim of improving the efficiency of the catalysis, single‐component photocatalysts have been developed in which the photosensitizer is chemically coupled to the hydrogen‐evolving catalyst in the same molecule through a bridging ligand. Until now, none of these photocatalysts has operated efficiently in pure aqueous solution: a highly desirable medium for energy‐conversion applications. Herein, we introduce a new ruthenium–rhodium polypyridyl complex as the first efficient homogeneous photocatalyst for H2 production in water with turnover numbers of several hundred. This study also demonstrates unambiguously that the catalytic performance of such systems linked through a nonconjugated bridge is significantly improved as compared to that of a mixture of the separate components. |
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| Keywords: | homogeneous photocatalysis hydrogen photocatalysts rhodium water chemistry |
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