Synthesis of pure-phase Sr2MgMoO6 nanostructured powder by the combustion method

• Synthesis of Sr2MgMoO6 nanopowder by the combustion method and calcined at 900 °C.
• Microstructure formed by highly interconnected nanocrystallites with size ~150 nm.
• Sr2MgMoO6 shows mainly a macroporous structure.
• Sr2MgMoO6 presents a specific surface area of 5.6 m2/g.

sPure-phase Sr2MgMoO6 (SMMO) nanopowder was obtained by combustion synthesis (CS) from an aqueous solution of metal nitrates, glycine and ammonium nitrate and subsequent treatment in air at 900 °C. The morphological and structural characterization was performed by X-Ray diffraction (XRD), N2 physisorption and scanning electron microscopy (SEM).This nanostructured powder presents average crystallite size of ~150 nm and a sponge-like morphology composed of highly interconnected crystallites and an effective specific area of 5.6 m2/g.EIS measurements indicate ASR values as low as 0.07 Ω cm2 at 800 °C.