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Platinum Concave Nanocubes with High-Index Facets and Their Enhanced Activity for Oxygen Reduction Reaction

Authors

  • Dr. Taekyung Yu,

    1. Department of Biomedical Engineering, Washington University, Saint Louis, MO 63130 (USA)
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    • These authors contributed equally to this work.

  • Do Youb Kim,

    1. Department of Biomedical Engineering, Washington University, Saint Louis, MO 63130 (USA)
    2. Department of Chemical and Biomolecular Engineering (BK21 graduate program), Korea Advanced Institute of Science and Technology (KAIST), 335 Gwahangro, Yuseong-gu, Daejeon 305-701 (Korea)
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    • These authors contributed equally to this work.

  • Prof. Hui Zhang,

    1. Department of Biomedical Engineering, Washington University, Saint Louis, MO 63130 (USA)
    2. State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027 (People's Republic of China)
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  • Prof. Younan Xia

    Corresponding author
    1. Department of Biomedical Engineering, Washington University, Saint Louis, MO 63130 (USA)
    • Department of Biomedical Engineering, Washington University, Saint Louis, MO 63130 (USA)
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  • This work was supported in part by the NSF (DMR-0804088) and startup funds from Washington University in St. Louis. Y.X. was also partially supported by the World Class University (WCU) program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (R32-20031). Part of the research was performed at the Nano Research Facility, a member of the National Nanotechnology Infrastructure Network (NNIN), which is supported by the National Science Foundation under award ECS-0335765.

Abstract

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Form und Funktion: Eine einfache Synthese führt über eine Reduktion in wässriger Lösung zu konkaven Pt-Nanowürfeln (siehe Bild) mit hochindizierten Flächen wie {510}, {720} und {830}. Die elektrokatalytische Aktivität der Nanokristalle (bezogen auf die Oberfläche) in der Sauerstoffreduktion ist 3.5-mal höher als die eines Pt/C-Katalysators.

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