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From nanoparticles to nanorods: Insights into the morphology changing mechanism of ceria.
- Source :
-
Ceramics International . Dec2018, Vol. 44 Issue 18, p23232-23238. 7p. - Publication Year :
- 2018
-
Abstract
- Abstract It is of significant importance for the applications to controllably and facilely synthesize ceria with tunable morphology and exposed surfaces. A series of nanosized ceria with different morphology have been synthesized by a simple precipitation method under an inert atmosphere with no surfactant or template. nanoparticles and one-dimensional (1D) nanostructures of ceria have been prepared with Ce(NO 3) 3 and CeCl 3 as cerium precursor respectively. With different mole ratio of [Cl-: NO 3 -], the transition morphologies from nanoparticles to nanorods have been synthesized. The shape-controlling effect of these ions is due to their different roles in the oxidation of Ce(OH) 3 to Ce(OH) 4. The FT-IR analysis proves that the composite of Ce(OH) 3 could be oxidized by NO 3 - and the NO 3 - be reduced to NO. However, the existence of Cl- can inhibit the oxidizing capacity of NO 3 -. The anion-induced controllable synthesis, which is a surfactant- and template-free facile precipitation method, provides a potential route for fabricating ceria nanostructures for its various applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 44
- Issue :
- 18
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 132690065
- Full Text :
- https://doi.org/10.1016/j.ceramint.2018.08.025