A Surfactant and Template-Free Route for Synthesizing Ceria Nanocrystals with Tunable Morphologies

Journal Article · Fri Jan 01 04:00:00 EST 2010 · Journal of Materials Chemistry

DOI:https://doi.org/10.1039/c0jm00982b· OSTI ID:986792

Wang, Wei ^[1]; Howe, Jane Y ^[1]; Li, Yuan ^[1]; Qiu, Xiaofeng ^[1]; Joy, David Charles ^[1]; Paranthaman, Mariappan Parans ^[1]; Doktycz, Mitchel John ^[1]; Gu, Baohua ^[1]

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1. ORNL

Crystalline ceria (CeO2) nanowires and nanoparticles are synthesized through a surfactant- and template-free solution precipitation-hydrothermal technique. We report that pure CeO2 nanocrystals with shapes consisting of spheres, 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.

• Research Organization: Oak Ridge National Laboratory (ORNL); Center for Nanophase Materials Sciences
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 986792
• Journal Information: Journal of Materials Chemistry, Journal Name: Journal of Materials Chemistry Journal Issue: 37 Vol. 20; ISSN 0959-9428; ISSN 1364-5501
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ADDITIVES
ANIONS
NITRATES
PHOSPHATES
SURFACTANTS