A novel and quick method for synthesis of antibacterial bentonite/titanium dioxide nanocomposites

Production of nonmaterial by an appropriate price and good quality is the main problem in using of nanotechnology. For achieving this discipline, present study proposed a simple and cost effect method. Nanocomposites of bentonite/titanium dioxide nanocomposites were synthesized for using as an antibacterial material by a prompt and simple alkaline ion exchange method. The preparation of nanocomposite was achieved by heating a mixture of TiO2 and bentonite at 500, 600 and 700 °C for 30 and 60 minute. For synthesis of these nanocomposites, no reduction agent or chemical material not used except TiO2 and bentonite. The nanocomposites were characterized by XRD, XRF, SEM and DRS. SEM observations confirmed the formation of TiO2 particles on the clay surfaces with the mean average size of about 96.7-99.6 nm at less than 60 min. The XRD analysis showed the presence of anatase structure of TiO2 nanoparticles within the clay mineral layers. The nanocomposite have antibacterial effect on the S. aureus and E. coli bacteria.