Functionalization of a Cotton Fabric Surface with Titania Nanosols: Applications for Self-Cleaning and UV-Protection Properties

In this study, cotton fabric was successfully modified by titania nanosols prepared by means of the sol−gel process with tetrabutyl orthotitanate [Ti(OC4H9)4] as the active ingredient. The cotton fabric was padded with the nanosol solution, dried at 60 °C, and cured at 150 °C. Scanning electron microscopy showed the presence of a titania film on the fiber surface. The photocatalytic properties of titania-nanosol-treated cotton fabric were investigated. The results showed that stains of coffee and red wine were successfully decomposed by exposure of the stained fabric to UV radiation. Furthermore, titania-nanosol treatment imparted to the cotton fabric a very good protection against UV radiation. The durability of the treatment was investigated by performing repeated home laundering, and the results showed no effect of laundering on the UV-protection efficiency.