Development of Palladium Surface-Enriched Heteronuclear Au–Pd Nanoparticle Dehalogenation Catalysts in an Ionic Liquid

Authors

  • Dr. Xiao Yuan,

    1. PKU Green Chemistry Center, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing (P.R. China)
    2. Institut des Sciences et Ingenierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne (Switzerland)
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  • Geng Sun,

    1. PKU Green Chemistry Center, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing (P.R. China)
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  • Hiroyuki Asakura,

    1. Department of Molecular Engineering, Kyoto University, Nishikyo, Kyoto (Japan)
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  • Prof. Tsunehiro Tanaka,

    1. Department of Molecular Engineering, Kyoto University, Nishikyo, Kyoto (Japan)
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  • Xi Chen,

    1. Department of Chemical & Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260 (Singapore)
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  • Dr. Yuan Yuan,

    1. Institut des Sciences et Ingenierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne (Switzerland)
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  • Prof. Gabor Laurenczy,

    1. Institut des Sciences et Ingenierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne (Switzerland)
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  • Prof. Yuan Kou,

    1. PKU Green Chemistry Center, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing (P.R. China)
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  • Prof. Paul J. Dyson,

    1. Institut des Sciences et Ingenierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne (Switzerland)
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  • Prof. Ning Yan

    Corresponding author
    1. Institut des Sciences et Ingenierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne (Switzerland)
    2. Department of Chemical & Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260 (Singapore)
    • Institut des Sciences et Ingenierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne (Switzerland)
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Abstract

Heteronuclear Au–Pd nanoparticles were prepared and immobilized in the functionalized ionic liquid [C2OHmim][NTf2]. The structural and electronic properties of the nanoparticles were characterized by a range of techniques and the surface of the nanoparticles was found to be enriched in Pd. Moreover, the extent of Pd enrichment is easily controlled by varying the ratio of Au and Pd salts used in the synthesis. The heteronuclear nanoparticles were found to be effective catalysts in dehalogenation reactions with no activity observed for the pure Au nanoparticles and only limited activity for the pure Pd nanoparticles. The activity of the heteronuclear nanoparticles may be attributed to charge transfer from Pd to Au and consequently to more efficient reductive elimination.

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