A surfactant and template-free route for synthesizing ceria nanocrystals with tunable morphologies

被引：42

作者：

Wang, Wei ^{[1
]}

Howe, Jane Y. ^{[2
]}

Li, Yuan ^{[1
]}

Qiu, Xiaofeng ^{[3
]}

Joy, David C. ^{[5
]}

Paranthaman, M. Parans ^{[3
]}

Doktycz, Mitchel J. ^{[4
,5
]}

Gu, Baohua ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA

[2] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[3] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA

[4] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA

[5] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2010年 / 20卷 / 36期

关键词：

CEO2; NANOCRYSTALS; HYDROTHERMAL SYNTHESIS; NANOPARTICLES; NANORODS; NANOWIRES; NANOTUBES; OXIDATION; NANOCUBES; POWDERS; PARTICLES;

D O I：

10.1039/c0jm00982b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nanosized crystalline ceria (CeO(2)) is synthesized through a surfactant- and template-free solution precipitation-hydrothermal method. We report that pure CeO(2) nanocrystals with shapes consisting of nanospheres, nanowires, and nanorods can be obtained simply by varying the anionic composition or the type of counter ion, such as chloride, nitrate and phosphate in solution before the hydrothermal treatment. The shape-controlling effect of these anions is explained by the selective interaction of these ions with specific facets of CeO(2), leading to the growth of CeO(2) nanocrystals with varying morphologies. Unlike techniques that require the use of organic and inorganic additives or templates, the new methodology represents a simple yet effective means to fabricate CeO(2) nanowires or nanoparticles with the potential to be further tuned to provide a morphologically controllable route for tailoring and designing CeO(2) nanomaterials for a wide variety of applications.

引用

页码：7776 / 7781

页数：6

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