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Enhanced oxidation resistance of active nanostructures via dynamic size effect

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  • Yun Liu

    (State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Fan Yang

    (State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences)

  • Yi Zhang

    (State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Jianping Xiao

    (State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences)

  • Liang Yu

    (State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences)

  • Qingfei Liu

    (State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yanxiao Ning

    (State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences)

  • Zhiwen Zhou

    (State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Hao Chen

    (State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Wugen Huang

    (State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Ping Liu

    (Brookhaven National Laboratory)

  • Xinhe Bao

    (State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences)

Abstract

A major challenge limiting the practical applications of nanomaterials is that the activities of nanostructures (NSs) increase with reduced size, often sacrificing their stability in the chemical environment. Under oxidative conditions, NSs with smaller sizes and higher defect densities are commonly expected to oxidize more easily, since high-concentration defects can facilitate oxidation by enhancing the reactivity with O2 and providing a fast channel for oxygen incorporation. Here, using FeO NSs as an example, we show to the contrary, that reducing the size of active NSs can drastically increase their oxidation resistance. A maximum oxidation resistance is found for FeO NSs with dimensions below 3.2 nm. Rather than being determined by the structure or electronic properties of active sites, the enhanced oxidation resistance originates from the size-dependent structural dynamics of FeO NSs in O2. We find this dynamic size effect to govern the chemical properties of active NSs.

Suggested Citation

  • Yun Liu & Fan Yang & Yi Zhang & Jianping Xiao & Liang Yu & Qingfei Liu & Yanxiao Ning & Zhiwen Zhou & Hao Chen & Wugen Huang & Ping Liu & Xinhe Bao, 2017. "Enhanced oxidation resistance of active nanostructures via dynamic size effect," Nature Communications, Nature, vol. 8(1), pages 1-7, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14459
    DOI: 10.1038/ncomms14459
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    Cited by:

    1. Hao Chen & Lorenz J. Falling & Heath Kersell & George Yan & Xiao Zhao & Judit Oliver-Meseguer & Max Jaugstetter & Slavomir Nemsak & Adrian Hunt & Iradwikanari Waluyo & Hirohito Ogasawara & Alexis T. B, 2023. "Elucidating the active phases of CoOx films on Au(111) in the CO oxidation reaction," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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