Preparation and Characterization of Supported Photocatalytic Composite and its Decomposition and Disinfection Effect on Bacteria in Municipal Sewage WaterS

摘要

TiO_(2)/CASB was prepared by straight forward mild hydrothermal processes. As prepared photocatalytic materials were characterized by powder X-ray diffraction (XRD), Scanning Electron Microcopy (SEM), Fourier Transform Infrared spectroscopy (FTIR), Positrons Annihilation Lifetime Spectroscopy (PALS) and Inductively Coupled Plasma Mass Spectroscopy (ICP-MS) to assess their physicochemical properties. Their photocatalytic decomposition and disinfection activity of bacteria in municipal sewage water was studied. The XRD studies reveal the presence of TiO in the form of anatase phase in the supported composite. The XRD studies further suggested that well crystalline form of TiO_(2) onto calcium alumino silicate beads (CASB) supports. FTIR results revealed the presence of Ti-O-Si linkages in the TiO_(2)/CASB composite, which are responsible for its higher photocatalytic activity in the destruction of bacterial mass in the sewage water. TiO_(2) deposited CASB composite showed drastic reduction in the colony forming unit (CFU) of sewage water with UV light.