A Long‐Lived Mononuclear Cyclopentadienyl Ruthenium Complex Grafted onto Anatase TiO2 for Efficient CO2 Photoreduction |
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| Authors: | Haowei Huang Jinjin Lin Dr Gangbei Zhu Prof Yuxiang Weng Prof Xuxu Wang Prof Xianzhi Fu Prof Jinlin Long |
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| Affiliation: | 1. State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, P.R. China;2. Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Science, Beijing, P.R. China |
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| Abstract: | This work shows a novel artificial donor–catalyst–acceptor triad photosystem based on a mononuclear C5H5‐RuH complex oxo‐bridged TiO2 hybrid for efficient CO2 photoreduction. An impressive quantum efficiency of 0.56 % for CH4 under visible‐light irradiation was achieved over the triad photocatalyst, in which TiO2 and C5H5‐RuH serve as the electron collector and CO2‐reduction site and the photon‐harvester and water‐oxidation site, respectively. The fast electron injection from the excited Ru2+ cation to TiO2 in ca. 0.5 ps and the slow backward charge recombination in half‐life of ca. 9.8 μs result in a long‐lived D+–C–A? charge‐separated state responsible for the solar‐fuel production. |
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| Keywords: | anatase ruthenium complexes charge-separated state CO2 reduction photocatalysis |
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