Abstract

Green mediated synthesis was employed to reduce the SnO2 nanomaterials from SnCl2 with the rhizome of Corallo carpus epigaeus as a reducing agent for the first time. The particles were subjected to optical, structural and morphological studies. In UV–Vis spectroscopy, the absorbent peak was observed at 352 nm confirmed the presence of Sn4+ ions. XRD pattern had been used to establish the tetragonal rutile structure of the nanomaterials. The morphological analysis revealed that the particles were in spherical shaped nanoclusters, with an average size of 10–11 nm. Electrochemical behavior was investigated using cyclic voltammetry method and electrochemical impedance spectroscopic studies. The response of CV curve was in quasi rectangular shape indicating the pseudo capacitive nature of the working electrode and also the behavior of reversible redox reactions. SnO2 nanomaterials exhibited larger specific capacitance value of 154.33 F/g at 5 mA/g. From the electrochemical impedance studies, the electron charge transfer resistance was observed to be 452 Ω which indicated significant capacitive performance of the SnO2 nanomaterials. The lower impedance generally indicate the enhanced performance of the energy storage device as well as improved electrons and diffusion of Sn4+ ions.

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