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

被引：189

作者：

Kaneko, Kenji

Inoke, Koji

Freitag, Bert

Hungria, Ana B.

Midgley, Paul A.

Hansen, Thomas W.

Zhang, Jing

Ohara, Satoshi

Adschiri, Tadafumi

机构：

[1] Kyushu Univ, Dept Mat Sci & Engn, Fukuoka 8190395, Japan

[2] FEI Co Japan Ltd, Tokyo 1080075, Japan

[3] FEI Co, NL-5600 MD Eindhoven, Netherlands

[4] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

[5] Fritz Haber Inst, Dept Inorgan Chem, D-14195 Berlin, Germany

[6] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

NANO LETTERS | 2007年 / 7卷 / 02期

关键词：

D O I：

10.1021/nl062677b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：421 / 425

页数：5

共 20 条

[1] ELECTRICAL-PROPERTIES OF CALCIA-DOPED CERIA WITH OXYGEN ION CONDUCTION [J].