Abstract
In the present research work, novel nano-sized cubes of TiO2 capped with the biomolecules of Tinospora cordifolia leaf extract have been successfully synthesised and characterised. UV–visible absorption spectrum shows the maximum absorption edge at a wavelength of 271 nm. Transmission electron microscope results reveal the development of nano-sized cubes with anatase phase confirmed from selected-area electron diffraction pattern. Further, X-ray diffraction study re-confirms the crystallinity and anatase phase evolution of TiO2. Fourier transmission infrared and energy-dispersive X-ray spectrum spectra elucidate the presence of biomolecules on TiO2 surface. The high photocatalytic activity of green synthesised TiO2 is demonstrated through the degradation of a textile dye, neutral red. A total 93.4% of dye has been removed with high apparent constant value (Kappa = 0.00758 min−1) under 120 min of short UV-light irradiation. Therefore, current work presents simple, low-cost, eco-friendly and hitherto unreported synthesis of TiO2 nano-cubes using Tinospora cordifolia leaf extract that could pave the way towards highly efficient photocatalysts.
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