Green Synthesis of NiSnO3 Nanopowder and Its Application as a Hydroquinone Electrochemical Sensor

Green synthesis of NiSnO 3 nanopowder was carried out via chemie douce using nickel and tin chlorides as precursors by stirring and refluxing at 80 C. The dried dark green bimetallic oxide nanoparticle was then used for preparing the sensing electrode in the form of a screen-printed electrode (SPE). The synthesized nanoparticles were analyzed for elemental, structural, and morphological characteristics using various analytical techniques. The Fourier transform infrared (FTIR) spectrum indicated the formation of a strong Sn-O-Ni framework, while X-ray diffraction (XRD) confirmed the formation of a bimetallic oxide nanopowder of NiSnO 3 . The synthesized nanoparticles were studied for hydroquinone (HQ) sensing characteristics to develop a sensitive and reproducible electrochemical sensor from 1 to 9 mM concentrations in buffer. The developed sensor exhibited a sensitivity of 6.03 A/mM (46.38 A/mMcm -2 ). The charge transfer studies indicated a reversible and diffusion-controlled process. To the best of our knowledge, such a material, i.e., NiSnO 3 , has not be used for HQ sensors and is being reported for the first time.