Abstract
TiO2-CeO2 (TiO2-Ce) nanocomposites were synthesized by sol–gel route using chemical method. The crystalline nanocomposites were obtained after calcination at 600 °C for 6 hours. N2-BET study revealed the huge surface area (0.03 cm2g-1) and pore size (2.28 nm) of TiO2 which decreased after impregnation of Ceria. In the Scanning Electron Microscopy analysis, particles were found to be of spherical shape. The energy dispersive X-ray (EDX) spectrum of TiO2-CeO2 (TiO2-Ce) nanocomposite showed Ti, O and Ce peaks obviously found in the spectra, confirming the presence of cerium and titanium. The agar well diffusion assay is used to confirm the inhibition zone of bacteria. The TiO2-CeO2 (TiO2-Ce) nanocomposite showed the antibacterial activity when tested against the pathogens gram negative bacteria such as Pseudomonas. Further the synthesized nanocomposite was characterized by using X-ray powder diffraction (XRD), Scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), Brunauer- Emmett-Teller (BET) method using N2 adsorption– desorption studies, UV–Visible absorption spectroscopy (UV), Fourier transform infrared spectroscopy (FTIR).
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