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Issue 36, 2010
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A surfactant and template-free route for synthesizing ceria nanocrystals with tunable morphologies

Wei Wang,*a  Jane Y. Howe,b  Yuan Li,a  Xiaofeng Qiu,c  David C. Joy,e  M. Parans Paranthaman,c  Mitchel J. Doktyczde  and  Baohua Gua 
Author affiliations

* Corresponding authors

a Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, USA
E-mail: wangw@ornl.gov
Fax: (+865)241-5245
Tel: (+865)576-3989

b Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, USA

c Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, USA

d Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, USA

e Center for Nanophase Materials Science, Oak Ridge National Laboratory, Oak Ridge, USA

Abstract

Nanosized crystalline ceria (CeO2) is synthesized through a surfactant- and template-free solution precipitation-hydrothermal method. We report that pure CeO2 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 CeO2, leading to the growth of CeO2 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 CeO2 nanowires or nanoparticles with the potential to be further tuned to provide a morphologically controllable route for tailoring and designing CeO2 nanomaterials for a wide variety of applications.

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

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Publication details

The article was received on 08 Apr 2010, accepted on 02 Jul 2010 and first published on 05 Aug 2010


Article type: Paper
DOI: 10.1039/C0JM00982B
Citation: J. Mater. Chem., 2010,20, 7776-7781
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    A surfactant and template-free route for synthesizing ceria nanocrystals with tunable morphologies

    W. Wang, J. Y. Howe, Y. Li, X. Qiu, D. C. Joy, M. P. Paranthaman, M. J. Doktycz and B. Gu, J. Mater. Chem., 2010, 20, 7776
    DOI: 10.1039/C0JM00982B

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