CTAB assisted hydrothermal synthesis, controlled conversion and CO oxidation properties of CeO{sub 2} nanoplates, nanotubes, and nanorods
- Research Center of Nano Science and Technology, Shanghai University, Shanghai 200444 (China)
In this work, CeO{sub 2} nanoplates were synthesized by a hydrothermal reaction assisted by hexadecyltrimethylammonium bromide (CTAB) at 100-160 deg. C. The size of nanoplates was around 40 nm. Further experiment showed that the controlled conversion of nanoplates into nanotubes, and nanorods can be realized by changing the reaction time, temperature, and CTAB/Ce{sup 3+} ratio value. X-ray diffraction (XRD), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET) nitrogen adsorption-desorption measurements were employed to characterize the samples. The CO oxidation properties of nanorods, nanoplates, and nanotubes were investigated. An enhanced catalytic activity has been found for CO oxidation by using CeO{sub 2} nanoplates as compared with CeO{sub 2} nanotubes and nanorods, and the crystal surfaces (100) of CeO{sub 2} nanoplates were considered to play an important role in determining their catalytic oxidation properties. - Graphical abstract: CeO{sub 2} nanoplates were synthesized by hydrothermal reactions assisted by CTAB, and the controlled conversion of nanoplates into nanotubes, and nanorods were realized by changing the CTAB/Ce{sup 3+} ratio value, reaction time, and temperature. An excellent catalytic activity is found for CO oxidation using CeO{sub 2} nanoplates due to their exposed surface (100)
- OSTI ID:
- 21128311
- Journal Information:
- Journal of Solid State Chemistry, Vol. 181, Issue 6; Other Information: DOI: 10.1016/j.jssc.2008.02.011; PII: S0022-4596(08)00108-4; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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