Tiocem

TioCem is a specialized cement with photocatalytic features, used on the surface of buildings to reduce air pollution caused by exposure of the cement to ultraviolet light (UV).

Technology

Photocatalysis is initiated by titanium dioxide (TiO₂), which is added during the cement’s production. Typical properties (i.e. strength) of cement applications (such as concrete) will be added to clean the air around the photocatalytic surface. Nitrogen dioxide (NO₂) will be particularly abated when daylight activates the photocatalytic surfaces.

The chemical process may be summarized as follows:

TiO₂ + hν -> TiO₂ + h+ + e-

H₂O + h+ -> H+ + OH-