Synthesis of nanostructured perovskite powders via simple carbonate co-precipitation

✍ Scribed by Cinzia Cristiani, Giovanni Dotelli, Mario Mariani, Renato Pelosato…

• Book ID: 120948611
• Publisher: Versita
• Year: 2013
• Tongue: English
• Weight: 266 KB
• Volume: 67
• Category: Article
• ISSN: 0366-6352
• DOI: 10.2478/s11696-013-0306-z

✦ Synopsis

A very simple, cost-effective, chloride-and alkali-free, carbonate co-precipitation synthesis in aqueous medium was applied in the preparation of perovskite-type lanthanum manganese oxide-based powders, i.e. La0.70Sr0.30MnO 3-δ (LSM) and La0.75Sr0.25Cr0.5Mn0.5O 3-δ (LSCrM). The precursors so obtained yielded nano-structured perovskite oxides when treated at 900 • C and 800 • C, respectively. The measured BET surface areas were in the low-end range for high temperature oxides (4 m 2 g -1 and 10 m 2 g -1 ) but the X-ray crystallite size was as low as 50 nm for LSCrM and 90 nm for LSM.