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Synthesis of mixed Mn–Ce–Ox one dimensional nanostructures and their catalytic activity for CO oxidation.
- Source :
-
Ceramics International . Apr2015, Vol. 41 Issue 3 Part B, p4675-4682. 8p. - Publication Year :
- 2015
-
Abstract
- One dimensional Mn–Ce–O x composite nanomaterials with various Mn contents were synthesized successfully by a hydrothermal method. The impacts of Mn contents on their morphologies and physical properties were investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The analysis reveals that the obtained composites are one-dimensional (1D) rod-like nanostructures. The catalytic behaviors of Mn–Ce–O x nanomaterials were investigated for CO oxidation. The Mn–Ce–O x catalysts were found to be more active than catalysts based on ceria alone. The catalytic activities of all one dimensional Mn–Ce–O x materials for CO conversion are quite high (142< T 50% <229 °C). Among the obtained nanocatalysts, the Mn–Ce–O x composite nanomaterials with 40 wt% Mn exhibit the best catalytic activity and the 50% CO conversion can be reached at 142 °C. The presence of transition metal element Mn can promote the production of oxygen vacancies and improve oxygen mobility, which result in enhancing the oxygen-storage capacity of the one dimensional Mn–Ce–O x materials and its catalytic performance for CO conversion. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 41
- Issue :
- 3 Part B
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 108298298
- Full Text :
- https://doi.org/10.1016/j.ceramint.2014.12.014