Durability of nano-engineered TiO2 self-cleaning treatments on limestone
P Munafò, E Quagliarini, GB Goffredo, F Bondioli… - … and Building Materials, 2014 - Elsevier
Construction and Building Materials, 2014•Elsevier
Titanium dioxide (TiO 2) colloidal suspensions applied by spray-coating have been used to
deposit transparent self-cleaning coatings on stones with the aim of preserving the original
aesthetic features of historical and monumental architectures. Travertine was chosen as the
reference substrate. Compatibility with travertine and self-cleaning efficiency were analysed
by indoor laboratory tests. The self-cleaning ability of TiO 2 is mostly dependant on the
photocatalysis generated by ultraviolet light. The stones were artificially aged through …
deposit transparent self-cleaning coatings on stones with the aim of preserving the original
aesthetic features of historical and monumental architectures. Travertine was chosen as the
reference substrate. Compatibility with travertine and self-cleaning efficiency were analysed
by indoor laboratory tests. The self-cleaning ability of TiO 2 is mostly dependant on the
photocatalysis generated by ultraviolet light. The stones were artificially aged through …
Abstract
Titanium dioxide (TiO2) colloidal suspensions applied by spray-coating have been used to deposit transparent self-cleaning coatings on stones with the aim of preserving the original aesthetic features of historical and monumental architectures. Travertine was chosen as the reference substrate. Compatibility with travertine and self-cleaning efficiency were analysed by indoor laboratory tests. The self-cleaning ability of TiO2 is mostly dependant on the photocatalysis generated by ultraviolet light. The stones were artificially aged through different procedures and the photo-activity of TiO2 was evaluated before and after the ageing. Results seem to encourage the use of nano-structured TiO2 for preserving stone during time.
Elsevier