Our Visible Light Photocatalysts can be applied to interior wall, floor and ceiling surfaces, as well as exterior building surfaces, with binders from other manufacturers as is done now with normal titania photocatalysts (commercial binders are carefully designed to be unaffected by the photocatalytic activity).  The resulting surfaces passively clean themselves and the air in contact with them when illuminated with sunlight or interior lighting.

Similarly, our Visible Light Photocatalysts can be applied to air filters for use in HVAC systems.  In this application, a visible light source must also be supplied to illuminate the filter.