Hydrothermal synthesis of SnO2 nanoparticles and its photocatalytic degradation of methyl violet and electrochemical performance

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Quality SnO 2 nanoparticles were synthesized through hydrothermal process using Tin(IV) chloride pentahydrate (SnCl 4 .5H 2 O) and Sodium hydroxide (NaOH). The synthesized nanoparticles were characterized by x-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), high resolution scanning electron microscopy (HRSEM), energy dispersive x-ray spectrometry (EDX), high resolution transmission electron microscopy (HRTEM), Ultra violet-visible diffuse reflectance spectroscopy (UV–vis DRS) and photoluminescence (PL). The band gap energy (Eg) of the synthesized SnO 2 nanoparticles were significantly blue shifted. An enhanced PL emission of SnO 2 nanoparticles at 300 nm excitation exhibited emission at 327, 386, 451, 467 and 500 nm, respectively. Furthermore, photocatalytic activity of synthesized SnO 2 nanoparticles were studied by degrading methyl violet dye under sunlight irradiation for a time of 120 min. Additionally, electrochemical performance of the SnO 2 nanoparticles were investigated, which gave a capacitance value of 87 F g −1 . The SnO 2 nanoparticles had potential application as photocatalyst and electrochemical performances.