Synthesis of single-crystalline Ce(CO{sub 3})(OH) with novel dendrite morphology and their thermal conversion to CeO{sub 2}

Journal Article · Mon Feb 15 00:00:00 EST 2010 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2009.09.026· OSTI ID:22202556

Li, Kang ^[1]; Zhao, Pusu ^[1]

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1. Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, Huaiyin Normal University, Huaian, Jiangsu 223300 (China)

Single-crystalline cerium carbonate hydroxide (Ce(CO{sub 3})(OH)) with dendrite morphologies have been successfully synthesized by hydrothermal method at 150 {sup o}C using Ce(NO{sub 3}){sub 3}.6H{sub 2}O as the cerium source, aqueous carbamide as both an alkaline and carbon source and poly(vinyl pyrrolidone) (PVP) as surfactant. Ceria (CeO{sub 2}) with dendrite morphologies have been fabricated by a thermal decomposition-oxidation process at 500 {sup o}C for 6 h using single-crystalline Ce(CO{sub 3})(OH) dendrites as the precursor. The dendrite morphologies of Ce(CO{sub 3})(OH) was sustained after thermal decomposition-oxidation to CeO{sub 2}. The as-prepared products were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), field-emission scanning electron microscopy (FE-SEM), and thermogravimetric analysis (TG).

• OSTI ID: 22202556
• Journal Information: Materials Research Bulletin, Vol. 45, Issue 2; Other Information: Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON SOURCES
CERIUM CARBONATES
CERIUM NITRATES
CERIUM OXIDES
CRYSTAL GROWTH
DENDRITES
FIELD EMISSION
HYDROTHERMAL SYNTHESIS
INORGANIC COMPOUNDS
MONOCRYSTALS
MORPHOLOGY
OXIDATION
PYROLYSIS
SCANNING ELECTRON MICROSCOPY
THERMAL GRAVIMETRIC ANALYSIS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION