HAADF STEM observation of the Au/CeO2 nanostructures

Yong Chen, Yue Chen, Changjun Qiu, Chunlin Chen, Zhongchang Wang

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    Gold nanoparticles supported on oxide substrates are widely utilized as heterogeneous catalysts. Here, we apply a facile surfactant- and template-free hydrothermal method to fabricate Au/CeO2 nanostructures, and show a successful preparation of well-defined CeO2 nano-octahedrons with Au nanoparticles on their surface. The high-angle annular dark field scanning transmission microscopy imaging technique is applied to investigate microstructure of the Au/CeO2 nanostructure. We find that the Au clusters with a diameter of less than 2 nm cannot form the FCC Au lattice, and that twins emerge in the Au nanoparticles with a diameter of larger than 2 nm. Moreover, we identify preferential orientation relationships {111}Au∥{111}CeO2 and ∥110∥Au∥110∥CeO2 between the Au nanoparticles and CeO2 nano-octahedrons.

    Original languageEnglish
    Pages (from-to)31-34
    Number of pages4
    JournalMaterials Letters
    Volume141
    DOIs
    Publication statusPublished - 2015 Feb 15

    Keywords

    • Au/CeO
    • Hydrothermal synthesis
    • Scanning transmission electron microscopy

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

    Fingerprint Dive into the research topics of 'HAADF STEM observation of the Au/CeO<sub>2</sub> nanostructures'. Together they form a unique fingerprint.

    Cite this