Formation of Antibacterial Film dried at Room Temperature using nano-sized TiO_2 Particle

摘要

This study was performed to develop an antibacterial film that can be dried at room temperature. A nanosized TiO_2 particle-dispersed solution was prepared by the hydrothermal treatment of peroxo-titanic acid at 160°C for 4h. The binder was synthesized through the hydrolysis and condensation reactions of TEOS (10cc) and GPTS (3.5cc) in the mixture of H_2O (30cc) and EtOH (30cc). The synthesized binder was mixed with 0.1 M of TiO_2 solution in a volume ratio of binder/TiO_2 solution=0.25-0.5. The glass substrate was coated after using the dip coating method, which was then followed by drying for over 2h at room temperature. Although the TiO_2 particles did not chemically-bond to the binder, the coating layer strongly adhered to the substrate and displayed good antibacterial properties.