Synthesis of a Homogeneously Porous Solid Oxide Matrix with Tunable Porosity and Pore Size

Porous ceramics are a technologically important branch of functional materials for a variety of physical and chemical systems. The properties of porous ceramics depend critically on porosity, pore morphology, pore size, and distribution. In this study, we demonstrate the synthesis of a homogeneously...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2012-06, Vol.95 (6), p.1832-1837
Main Authors: Zhang, Lingling, Mao, Zhengping, Thomason, James D., Wang, Siwei, Huang, Kevin
Format: Article
Language:English
Subjects:
Alternative fuels
Ceramics
Chemical synthesis
Fuel cells
Matrix
Oxides
Pore size
Porosity
Porous materials
Resultants
Synthesis
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Summary:Porous ceramics are a technologically important branch of functional materials for a variety of physical and chemical systems. The properties of porous ceramics depend critically on porosity, pore morphology, pore size, and distribution. In this study, we demonstrate the synthesis of a homogeneously porous samarium‐doped cerium (Ce0.8Sm0.2O1.9, SDC) matrix with tunable porosity and pore size via sacrificial template method. The study explicitly shows that the porosity and pore size of the resultant porous matrix can be controlled by the volume fraction of sacrificial material NiO and sintering temperature, along with the mono‐mode pore distribution produced by molecular‐level mixing of co‐precipitating SDC and NiO. The demonstrated sacrificial template methodology provides an alternative means of tailoring properties of a porous ceramic for particular applications in catalysis, fuel cells, and gas separation membranes.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2012.05123.x