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Up converting (UC) nanoparticles have been a milestone for the people of optical world in the past decade because of their extraordinary properties. In this article, a novel cobalt doped nanocrystalline Gadolinium Aluminate (GdAlO3:Co2+) have been successfully synthesized by the solution combustion method. The structure of the samples were characterized using X-ray diffractometer (XRD) shows that transition metal (TM) doped nanoparticles have smaller crystalline size the structural morphology was studied using Transmission electron microscopy (TEM) which shows irregular shaped, highly dispersed and the size was found to be in the range of 15–25 nm. The result demonstrated that the synthesized material could be useful for dye decolourisation as a photocatalyst.

BACKGROUND: Nano perovskite-type structure as denoted by ABO3 (A= RE) have been popular targets of fundamental investigations since they exhibit a wide variety of physical properties depending upon the chemical composition, defects and small changes in atomic arrangements. METHODS: GdAlO3:Co2+ (1, 3 &9 mol %) synthesized using the solution combustion method by using stoichiometric quantities of gadolinium nitrate [Gd (NO3)3], aluminium nitrate (Al (NO3)2, cobalt nitrate Co(NO3)2. RESULTS: The morphology, structure and particle size of the prepared GdAlO3:Co2+ sample characterized by transmission electron microscope (TEM) image. The Fourier transform infrared (FTIR) spectral analysis confirms that the as-prepared powder itself is in pure phase. Electrochemical impedance measurements (EIS) of different GdAlO3: Co2+ samples were measured vs Ag/AgCl in the frequency range of 1 Hz to 1 MHz with AC amplitude of 5 mV at steady-state which clearly indicates that Co2+ dopant was successful doping material for the fabrication of supercapacitors. CONCLUSION: Electrochemical impedance measurements (EIS) of different GdAlO3: Co2+ samples were measured vs Ag/AgCl in the frequency range of 1 Hz to 1 MHz with AC amplitude of 5 mV at steady-state which clearly indicates that Co2+ dopant was successful doping material for the fabrication of supercapacitors. As a future perspective, we believe that GdAlO3:Co2+ composite material could be a promising electrode material for the fabrication of various sensors, supercapacitors and solar cells.