| Selective CO2 reduction into formate using Ln-Ta oxynitrides combined with a binuclear Ru(Ⅱ)complex under visible light |
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| 作者姓名： | Kanemichi Muraoka Miharu Eguchi Osamu Ishitani Francois Chevire Kazuhiko Maeda |
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| 作者单位： | Department of Chemistry;Japan Society for the Promotion of Science;Research Center for Functional Materials;Univ Rennes |
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| 基金项目： | supported by a Grant-in-Aid for Scientific Research on Innovative Area “Mixed Anion(Projects JP16K21724 and JP16H06441)”from the Japan Society for the Promotion of Science(JSPS);a CREST program(Project JPMJCR13L1)from the Japan Science and Technology Agency(JST);a JSPS Fellowship for Young Scientists(Project JP17J06914)。 |
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| 摘 要： | Hybrid materials constructed from a visible-light-absorbing semiconductor and a functional metal complex have attracted attention as efficient photocatalysts for CO2 reduction with high selectivity to a desired product.In this work,defect fluorite-type Ln-Ta oxynitrides LnTaOxNy(Ln=Nd,Sm,Gd,Tb,Dy and Ho)were examined as the semiconductor component in a hybrid photocatalyst system combined with known Ag nanoparticle promoter and binuclear ruthenium(Ⅱ)complex(RuRu’).Among the LnTaOxNy examined,TbTaOxNy gave the highest performance for CO2 reduction under visible light(k>400 nm),with a Ru Ru0-based turnover number of 18 and high selectivity to formate(>99%).Physicochemical analyses indicated that high crystallinity and more negative conduction band potential of Ln Ta OxNywith the absence of Ln-4 f states in the band gap structure contributed to higher activity of the hybrid photocatalyst.
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| 关 键 词： | Artificial photosynthesis Heterogeneous photocatalysis Mixed anion compounds Solar fuels |
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