Synthesis and atomic-scale characterization of CeO2 nano-octahedrons

Manli Zhang, Yong Chen, Changjun Qiu, Xiangfang Fan, Chunlin Chen, Zhongchang Wang

    Research output: Contribution to journalArticlepeer-review

    9 Citations (Scopus)

    Abstract

    We report the synthesis of ceria nano-octahedrons using a simple yet efficient hydrothermal technique free of surfactant and template. A comprehensive microscopic characterization reveals that the nano-octahedrons exposed with eight {1 1 1} planes have shape corners and well-defined edges at the nanoscale. Atomic-resolution imaging uncovers that a couple of atomic layers are disappeared at corner, the atomic density of oxygen is reduced at surface, and there occur stacking faults inside the nano-octahedrons, which should have implications for our understanding of catalytic activity of ceria. We also propose a growth mechanism for the nano-octahedrons and provide an explanation to the easy formation of nano-octahedrons with the eight {1 1 1} facets.

    Original languageEnglish
    Pages (from-to)218-223
    Number of pages6
    JournalPhysica E: Low-Dimensional Systems and Nanostructures
    Volume64
    DOIs
    Publication statusPublished - 2014 Nov

    Keywords

    • Atomic-resolution imaging
    • Ceria
    • Hydrothermal method
    • Nano-octahedron

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics
    • Condensed Matter Physics

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