Member, The American Ceramic Society.
A Sucrose-Mediated Sol–Gel Technique for the Synthesis of MgO–Y2O3 Nanocomposites
Article first published online: 28 DEC 2012
© 2012 The American Ceramic Society
Journal of the American Ceramic Society
Volume 96, Issue 2, pages 346–350, February 2013
How to Cite
Iyer, A., Garofano, J. K.M., Reutenaur, J., Suib, S. L., Aindow, M., Gell, M., Jordan, E. H. (2013), A Sucrose-Mediated Sol–Gel Technique for the Synthesis of MgO–Y2O3 Nanocomposites. Journal of the American Ceramic Society, 96: 346–350. doi: 10.1111/jace.12123
- Issue published online: 11 FEB 2013
- Article first published online: 28 DEC 2012
- Manuscript Accepted: 5 NOV 2012
- Manuscript Received: 1 AUG 2012
- Raytheon Company
A sucrose-mediated aqueous sol–gel procedure was developed to synthesize MgO–Y2O3 nanocomposite ceramics for potential optical applications. The synthesis involves the generation of a precursor foam containing Mg2+ and Y3+ cations via the chemical and thermal degradation of sucrose molecules in aqueous solution. Subsequent calcination and crushing of the foam gave MgO–Y2O3 nanocomposites in the form of thin mesoporous flake-like powder particles with uniform composition and surface areas of 27–85 m2 g−1, depending on calcination conditions. The flakes exhibited a homogeneous microstructure comprising intimately mixed nanoscale grains of the cubic MgO and Y2O3 phases. This microstructure was resistant to grain coarsening with average grain sizes of less than 100 nm for calcination temperatures of up to 1200°C. The results indicate that the sucrose-mediated sol–gel process is a simple effective method for making nanoscale mixed oxides.