Atomic-scale observation of migration and coalescence of au nanoclusters on YSZ surface by aberration-corrected STEM

Junjie Li, Zhongchang Wang, Chunlin Chen, Sumei Huang

    研究成果: Article査読

    25 被引用数 (Scopus)

    抄録

    Unraveling structural dynamics of noble metal nanoclusters on oxide supports is critical to understanding reaction process and origin of catalytic activity in heterogeneous catalysts. Here, we show that aberration-corrected scanning transmission electron microscopy can provide direct atomic-resolution imaging of surface migration, coalescence, and atomic rearrangement of Au clusters on an Y:ZrO2 (YSZ) support. The high resolution enables us to reveal migration and coalescence process of Au clusters at the atomic scale, and to demonstrate that the coalesced clusters undergo a cooperative atomic rearrangement, which transforms the coherent into incoherent Au/YSZ interface. This approach can help to elucidate atomistic mechanism of catalytic activities and to develop novel catalysts with enhanced functionality.

    本文言語English
    論文番号5521
    ジャーナルScientific reports
    4
    DOI
    出版ステータスPublished - 2014 7月 1

    ASJC Scopus subject areas

    • 一般

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