LAUSR

The effect of the crystalline phase PVP encapsulated titanium dioxide (TiO2) nanoparticles (NPs) to optimize the optical properties and photocatalytic activity were comparatively investigated at different calcination temperatures. The synthesized products were characterized using instrumental techniques, such as powder X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), transmission electron microscope, energy dispersive X-ray, ultraviolet–visible (UV–visible), photoluminescence (PL) and vibrating sample magnetometer. The functional groups were identified by the FT-IR analyses. XRD result showed that the anatase and rutile phase structure of TiO2 NPs was confirmed. The spherical shaped morphology is predicted by the SEM analysis. The optical properties of the TiO2 NPs were studied by the UV–visible and PL analysis. The magnetic behavior of the TiO2 NPs was studied. Photocatalytic activity of TiO2 NPs was tested by the degradation of MeB dye under UV light irradiation. In addition, the chemical oxygen demand removal follows the photo degradation in behaviour was observed.