Synthesis of SrAl2O4 and MgCoO2 bimetallic inorganic nanomaterials for thermal and electrochemical applications

Bimetallic inorganic nanoparticles are vital due to their high biocompatibility, stability and comparatively less toxicity. Nanosized bimetallic oxide materials have been extensively studied worldwide due to their unique properties such as electrical, magnetic and mechanical properties. Present work is reporting the size-controlled synthesis of strontium aluminate and magnesium cobaltate nanoparticles (SrAl₂O₄ and MgCoO₂) by self-propagating combustion reaction using polymer fuel. Size of the prepared SrAl₂O₄ and MgCoO₂ samples distributed on the DLS spectrum was 76 nm and 100 nm respectively. The structural and morphological characterization of the prepared nano oxide samples were carried out by X-ray diffraction (XRD) and scanning electron microscope (SEM) analysis respectively. It shows high crystalline and compact nature of the samples. FT-IR instrumentation was used to study the bonding nature of both the oxide nano samples. Formation of metal oxide and metal–metal bonding can supports the sample formation. EDX analysis carried out to further confirm the presence of Sr, Al, Mg and Co metals and also characteristics absorption peaks of signals demonstrate the final phases of the samples. UV–vis spectroscopic analysis and fluorescence study of the samples was undertaken to know the absorption and emission behaviour respectively. In continuation, the thermal and electrochemical studies of prepared samples were analyzed. Thermal investigation assesses the thermal behaviour of the samples, which shows high thermal stability. The preliminary results of CV study concluding that, the samples are electro active nature and also show possible electrochemical applications. The insights gained from this work contribute to the growing body of knowledge in metal oxide nanomaterials and pave the way for innovations in electrical and thermal-related technologies.