Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10625906 | Ceramics International | 2013 | 7 Pages |
Abstract
Powders of oxide-ion conductor La2Mo2O9 presenting nanodomains were synthesized by using polyol processes. The influence of different process parameters on the structure and particles morphology was determined. By the classical polyol process, whatever the polyol solvent used (ethylene glycol, diethylene glycol, 1,2-propanediol and tetraethylene glycol) platelet particles with dimensions of few hundred nanometers long and around twenty nanometers thick were observed, as agglomerates of small sub-particles. Only with diethylene glycol, pure La2Mo2O9 was obtained, whereas with microwave assistance, ethylene glycol also leads to pure product. For both ethylene and diethylene glycol solvent, the microwave assisted process resulted in either agglomerates or desert roses conglomerates after heat treatments at 500 °C for 5 min or 2 h. Specific surface areas, ranging between 23 and 36 m2 gâ1, have been measured for pure La2Mo2O9 powders.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Houssem Sellemi, Sandrine Coste, Amor Ben Ali, Richard Retoux, Leila Samia Smiri, Philippe Lacorre,