Abstract
This work reports the synthesis of TiO2 nanoparticles via ionic liquid-assisted hydrothermal method at 130 °C for two days. The obtained product was characterised by various techniques. The X-ray diffraction data reveal the anatase phase TiO2 nanoparticles with crystallite size 37 nm. The Fourier transform infrared spectrum shows a band at 400 cm−1 due to Ti–O–Ti stretching vibration, in addition to the presence of ionic liquid. The UV–Vis spectrum of TiO2 nanoparticles shows an absorption band at 314 nm which indicates a blueshift compared with that of bulk TiO2. The transmission electron microscopy images show almost spherical-shaped nanoparticles with an average diameter of 40–80 nm. TiO2 nanoparticles exhibit excellent photocatalytic activity for the degradation of trypan blue, and also help in the reduction of Cr+6 to Cr+3. TiO2 nanoparticles modified glassy carbon electrode exhibits better electrocatalytic oxidation towards dopamine compared with bare glassy carbon electrode.
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