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Updated: Jun 6, 2026
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Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices
Published on: March 27, 2019
Characterization of mesoporosity in ceria particles using electron microscopy
Shao-Ju Shih1, Pilar Rodrigo Herrero, Guoqiang Li
1Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK.
Summary
Spray pyrolysis synthesis of ceria particles using different precursors influences porosity. Cerium acetate hydrate precursors yield twice the surface area due to open pores, unlike cerium nitrate hydrate precursors.
Area of Science:
- Materials Science
- Nanotechnology
- Ceramic Engineering
Background:
- Ceria nanoparticles are crucial in catalysis and energy applications.
- Controlling particle morphology and surface area is key to optimizing performance.
- Spray pyrolysis is a versatile method for nanoparticle synthesis.
Purpose of the Study:
- To investigate the impact of different precursors on ceria particle morphology.
- To correlate precursor choice with resulting porosity and surface area.
- To understand precursor influence on 3D microstructure during spray pyrolysis.
Main Methods:
- Synthesis of ceria particles via spray pyrolysis using cerium acetate hydrate (CeA) and cerium nitrate hydrate (CeN).
- Characterization of particle geometry and 3D morphology using transmission electron microscopy (TEM) and electron tomography.
- Measurement of surface area using BET analysis.
Main Results:
- CeA ceria particles exhibited twice the surface area compared to CeN ceria particles.
- 3D microstructural analysis revealed CeA particles possess both open and closed pores, while CeN particles only have closed pores.
- Precursor type dictates porosity, likely influenced by melting temperatures during spray pyrolysis.
Conclusions:
- The choice of precursor significantly controls the pore structure and surface area of spray-pyrolyzed ceria.
- Open porosity in CeA particles contributes to their higher surface area.
- Precursor melting behavior during spray pyrolysis is a critical factor in determining ceria microstructure.
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