Enhanced Adsorption and Photo Degradation of Physically Mixed Tio2 Based Photocatalysts
A variety of single, bi and tri metal doped TiO 2 nanoparticles were prepared by sol-gel method and analysed for
their adsorption and photocatalytic abilities using Methylene Blue (MB) as target pollutant. The materials were characterised
using XRD, ESD, SEM, FT-IR, FL microscopy and DRS. A very simple, low cost, efficient and robust physical
heterostructure of Ag 3 PO 4 /TiO 2 was also successfully developed. The composition, optical properties and morphology of the
prepared nanomaterials were controllable by adjusting the mixing ratios. The physical mixture exhibited much higher
photocatalytic performance under the visible light as well as adsorption capacities. The coupling of Ag 3 PO 4 particles with
UV light active TNPs simultaneously could utilize the larger part of solar spectra and less consumption of metals. The
heterostructure is quite appealing for their practical use in environmental issues. Further, this provides an easy, rapid and low
cost adsorbent and a good photocatalyst which otherwise is costly and time consuming when synthesised chemically.
Keywords— Adsorption, Methylene blue, Mixture, Photocatalysis, Titania.