Phytochemically and PVP stabilized TiO2 nanospheres for enhanced photocatalytic and antioxidant efficiency

Abstract

In this paper, TiO2 NPs has been fabricated by via microwave-assisted chemically and biologically methods. The anatase and rutile phases of TiO2 NPs were obtained by calcinating them at temperatures of 400 and 700 °C, respectively. In these two different approaches, the biomolecules like alkaloids, steroids, glycosides, etc. present in Tinospora Cordifolia (TC) and polyvinylpyrrolidone (PVP), respectively, have been reported to act as stabilizing agents for TiO2 NPs. XRD, Raman, UV–visible, SEM-EDS and TEM spectroscopic techniques were used to analyze distinct physical and chemical properties. The so-synthesized TiO2 NPs exist as tetragonal crystal lattice with spheroidal shape and sizes between 8 and 40 and 15–98 nm. Under the influence of UV light, the photocatalytic activity was examined against two common industrial dyes, methyl orange (MO) and methylene blue (MB) by using synthesized TiO2 NPs. Up to 98% and even 100% of MO and MB dye degradation have been seen in rare circumstances. The antioxidant potential of TiO2 NPs has been evaluated up to 91% and 74% from the biologically and chemically methods, respectively.