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

    Research output: Contribution to journalArticlepeer-review

    19 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Article number5521
    JournalScientific reports
    Volume4
    DOIs
    Publication statusPublished - 2014 Jul 1

    ASJC Scopus subject areas

    • General

    Fingerprint Dive into the research topics of 'Atomic-scale observation of migration and coalescence of au nanoclusters on YSZ surface by aberration-corrected STEM'. Together they form a unique fingerprint.

    Cite this