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Submitted by/Eingereicht von: Steag

Innovation: Photoment

Figure: Steag

In the German city of Bottrop, construction of an additional test track recently commenced

Figure: Steag

Photoment is a concrete admixture with photocatalytic activity. It consists of a combination of flyash particles and different titanium dioxides (TiO₂).

On a photocatalytic surface, under the action of sunlight and artificial light, a photocatalytic reaction of the TiO₂ is triggered, causing the harmful nitrogen oxides (NO₂) from the air to be converted into nitrate (NO₃^-). The reaction can be repeated as often as desired and is not used up. The photocatalytic reaction, in addition, forms a superhydrophile surface that stays clean longer and is self-cleaning.

The special mix of round flyash...

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