Structural and morphological characterization of cerium oxide nanocrystals 
prepared by hydrothermal synthesis

Kaneko, Kenji; Inoke, Koji; Freitag, Bert; Hungria, Ana B.; Midgley, Paul A.; Hansen, Thomas W.; Zhang, Jing; Ohara, Satoshi; Adschiri, Tadafumi

doi:10.1021/nl062677b

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Structural and morphological characterization of cerium oxide nanocrystals prepared by hydrothermal synthesis

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Hansen, Thomas W.
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Kaneko, K., Inoke, K., Freitag, B., Hungria, A. B., Midgley, P. A., Hansen, T. W., et al. (2007). Structural and morphological characterization of cerium oxide nanocrystals prepared by hydrothermal synthesis. Nano Letters, 7(2), 421-425. doi:10.1021/nl062677b.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-02C2-1

Abstract

Colloidal cerium oxide (CeO₂) nanocrystals prepared by hydrothermal synthesis were characterized by high-resolution transmission electron microscopy (HRTEM) and three-dimensional electron tomography (3D-ET). HRTEM images of individual CeO₂ nanocrystals were then simulated by Blochwave and multislice simulations to determine the atomic arrangement and terminating atoms. The edge length distributions were between 5.0 and 8.0 nm with an average edge length of 6.7 nm. The HRTEM images showed that the CeO₂ particles were slightly truncated revealing {220} facets. 3D-ET revealed that the CeO₂ nanocrystals exposed predominantly {200} cubic facets. The nanocrystals were truncated at the corners exposing {111} octahedral facets and at the edges {220} dodecahedral facets. Furthermore, 3D-ET revealed the presence of some tetragonal-shaped CeO₂ nanocrystals.