Hostname: page-component-76fb5796d-45l2p Total loading time: 0 Render date: 2024-04-26T02:55:24.868Z Has data issue: false hasContentIssue false
  • English
  • Français

Preparation of hexagonal cerium oxide nanoflakes by a surfactant-free route and its optical property

Published online by Cambridge University Press:  31 January 2011

X. Yu ,
P. Ye ,
L. Yang ,
S. Yang ,
P. Zhou  and
W. Gao
X. Yu*
Affiliation:
Department of Chemistry, Shanghai Normal University, Shanghai 200234, People’s Republic of China
P. Ye
Affiliation:
Department of Chemistry, Shanghai Normal University, Shanghai 200234, People’s Republic of China
L. Yang
Affiliation:
Department of Chemistry, Shanghai Normal University, Shanghai 200234, People’s Republic of China
S. Yang
Affiliation:
Department of Chemistry, Shanghai Normal University, Shanghai 200234, People’s Republic of China
P. Zhou
Affiliation:
Department of Chemistry, Shanghai Normal University, Shanghai 200234, People’s Republic of China
W. Gao
Affiliation:
Department of Chemistry, Shanghai Normal University, Shanghai 200234, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: xibinyr@shnu.edu.cn
Get access

Abstract

Hexagonal cerium oxide nanoflakes have been synthesized by using a surfactant-free route. Transmission electcron microscopy (TEM), x-ray diffraction (XRD), infrared spectroscopy (FTIR), thermogravimetric and differential thermal analysis (TG-DTA), Brunauer–Emmett–Teller adsorption isotherm (BET), photoluminescence (PL), and ultraviolet–visible (UV–VIS) were used to characterize the sample. The mean size of the nanoflakes is about 30 nm and the specific surface is about 70.08 m2·g−1 when annealed at 400 °C. The acidity and superfluous NH4NO3 play a key role on the formation of nanoflakes in which there exists Ce (IV) and very little Ce (III). The nanoflakes exhibit a wide PL emission peak among 350–400 nm, strong absorption ranged from 200–450 nm, and strong reflection in the visible region. As the sizes of as-prepared samples decrease, a clear blue shift in the absorbing edge is observed. The linear relationship between ΔEg and D is shown in a log–log plot. The as-prepared cerium oxide nanoflakes can be widely used as UV absorbent and polishing materials.

Keywords

CeMorphologyOptical properties
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 11 , November 2007 , pp. 3006 - 3013
Copyright
Copyright © Materials Research Society 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Toshiyuki, M., Yamamoto, M., Sakata, T., Morib, H., Adachi, G.: Synthesis of BN-coated CeO2 fine powder as a new UV blocking material. J. Mater. Chem. 10, 353 2000Google Scholar
2Joseph, M.S., Shyam, P.M., Ronald, J.G.: Chemical Mechanical Planarization of Microelectronic Materials. John Wiley & Sons Inc. New York 1997Google Scholar
3Hoshino, T., Kurata, Y., Terasaki, Y.: Mechanism of polishing of SiO2 films by CeO2 particles. J. Non-Cryst. Solids 283, 129 2001CrossRefGoogle Scholar
4Song, X.L., Wang, H.B., Wu, X.L., Qiu, G.Z.: Preparation and applications of CeO2 nanoparticles. Chin. Rare Earths 25, 55 2004Google Scholar
5Jacques, B., Laetitia, O., Benoist, R.: Catalytic wet air oxidation of ammonia over M/CeO2 catalysts in the treatment of nitrogen-containing pollutants. Catal. Today 75, 29 2002Google Scholar
6Kaspar, J., Fornasiero, M., Graziani, M.: Use of CeO2-based oxides in the three-way catalysis. Catal. Today 50, 285 2000CrossRefGoogle Scholar
7Cambelli, P., Gorbo, P., Migliardin, F.: Potentialities and limitations of lean de-NOx catalysts in reducing automatic exhaust emissions. Catal. Today 59, 279 2000Google Scholar
8Seiichiro, I., Hiroyuki, Y., Kazunori, U.: Combustion activity of Ag/CeO2 composite catalyst. Applied Catal. A 68, 188 2000Google Scholar
9Schaadt, D., Birringer, R., Ying, J.Y.: Catalytic properties of nanostructured metal oxides synthesized by inert gas condensation. Nanostruct. Mater. 9, 423 1997Google Scholar
10Noriya, I., Woosuck, S., Norimitsu, M.: Resistive oxygen gas sensors based on CeO2 fine powder prepared using mist pyrolysis. Sens. Actuators, B 87, 95 2002Google Scholar
11Dong, X.Y., Qu, X.G., Hong, G.Y.: Preparation and application in electrochemistry of nanocrystalline CeO2. Chin. Sci. Bull. 41, 1936 1996Google Scholar
12Christel, L.R., Long, J.W., Lucas, E.M., Pettigrew, K.A., Stroud, R.M., Doescher, M.S., Rolison, D.R.: Sol-Gel-Derived ceria nanoarchitectures: Synthesis. characterization and electrical properties. Chem. Mater. 18, 50 2006Google Scholar
13Tang, B., Zhuo, L., Ge, J., Wang, G., Shi, Z., Niu, J.: A surfactant-free route to single-crystalline CeO2 nanowires. Chem. Commun. 28, 3565 2005CrossRefGoogle Scholar
14Tang, C., Bando, Y., Liu, B., Golberg, D.: Cerium oxide nanotubes prepared from cerium hydroxide nanotubes. Adv. Mater. 17, 3005 2005Google Scholar
15Nigro, R.L., Toro, R.G., Malandrino, G., Fragala, I.L.: Morphological and structural control of nanostructured (100) oriented CeO2 films grown on random metallic substrates. J. Mater. Chem. 15, 2328 2005Google Scholar
16Masui, T., Fujiwara, K., Machida, K., Adachi, G.: Characterization of cerium (IV). Oxide ultrafine particles prepared using reversed micelles. Chem. Mater. 9, 2197 1997Google Scholar
17JCPDS No. 34-0394. International Center for Diffraction Data Newton Square, PA 1983Google Scholar
18JCPDS No. 47-0867. International Center for Diffraction Data Newton Square, PA 1995Google Scholar
19Ho, C., Yu, J.C., Kwong, T., Mak, A.C., Lai, S.: Morphology-controllable synthesis of mesoporous CeO2 nano and microstructures. Chem. Mater. 17, 4514 2005Google Scholar
20Hong, G.: Inorganic Solid Chemistry Science Press Shanghai, China 2004 303Google Scholar
21Dong, X.T., Li, M., Zhang, W., Liu, G.X., Hong, G.Y.: Preparation and characterization of nanocrystalline CeO2 by precipitation method. J. Rare Earths 20, 585 2002Google Scholar
22Tsunekawa, S., Wang, J-T., Kawazoe, Y., Kasuya, A.: Blueshifts in the ultraviolet absorption spectra of cerium oxide nanocrystallites. J. Appl. Phys. 94, 3654 2003Google Scholar