Facile chemical synthesis of Mg-doped NiMnO3 perovskite based nano-structured materials: Application in photocatalysis and supercapacitors

Perovskite based nanostructures are widely investigated in the photocatalysis and supercapacitor fields owing to their unique morphological features and exceptional electrochemical properties such as ionic conductivity, electronic conductivity, supermagnetic, thermoelectric, photocatalytic, dielectric properties, etc. Herein, we reported the synthesis of Mg doped NiMnO3 (Ni1-x MgxMnO3, where x = 0, 0.05, 0.10, 0.15, 0.20, and 0.25) by wet chemical co-precipitation route. The resultant perovskite materials were characterized using XRD, SEM, EDAX, FT-IR, BET, TEM, and UV-Vis spectroscopy. The photodegradation characteristics of synthesized materials were analysed by bromophenol blue (BPB) under UV illumination. The electrochemical properties were studied by CV, GCD, and EIS. Among undoped and Mg-doped NiMnO3 samples, N5 exhibited superior photocatalytic efficiency (94% after 75 min), excellent electrochemical performance (527 Fg-1) and long cycle life (89.3% after 1000 cycles).