Nano Archive

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

Kaneko, Kenji and Inoke, Koji and Freitag, Bert and Hungria, Ana B. and Midgley, Paul A. and Hansen, Thomas W. and Zhang, Jing and Ohara, Satoshi and Adschiri, Tadafumi (2007) Structural and morphological characterization of cerium oxide nanocrystals prepared by hydrothermal synthesis. NANO LETTERS, 7 (2). pp. 421-425.

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Official URL: http://pubs.acs.org/doi/full/10.1021/nl062677b

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.

Item Type:Article
Uncontrolled Keywords:ELECTRICAL-PROPERTIES; DOPED CERIA; TOMOGRAPHY; TEMPERATURES; PARTICLES; OXIDATION
Subjects:Analytical Science > Microscopy and probe methods
ID Code:6189
Deposited By:IoN
Deposited On:10 Sep 2009 12:06
Last Modified:10 Sep 2009 12:06

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