Abstract
The binary system CeO2-ZrO2 is thermally stable and has superior reduction-oxidation properties. It has been commonly used in the three-way catalytic converters for automobiles. In this work, an inorganic biomorphic porous CexZr1-xO2 fibrous network was successfully synthesized by using the egg shell membrane (ESM) as templates, and its morphology was a perfect replica of the original ESM. The synthesis involved a simple infiltration and calcination process. A fresh ESM was peeled from a chicken egg shell. It was soaked in a Ce(NO3)3 and Zr(NO3)4 mixture before it was calcined at 700 °C in ambient environment. The fibers in the biomorphic network had diameter ranged from 1 to 4 μm, and they were composed of CexZr1-xO2 nanocrystallites having an average grain size of ∼10 nm.
Original language | English |
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Pages (from-to) | 1438-1444 |
Number of pages | 7 |
Journal | Current Applied Physics |
Volume | 9 |
Issue number | 6 |
DOIs | |
State | Published - Nov 2009 |
Keywords
- Biomorphic porous network
- CeZrO
- Egg shell membrane