What are NOx-sucking sidewalks made from?



  1. 0 Votes

    The patented additive that enables a sidewalk to suck nitrogen dioxide from the air consists of nano-particles of titanium dioxide, a naturally-occurring mineral used in everything from paint to sunscreen to food coloring. When the nano-particles are embedded in the top layer of sidewalk pavers or building panels and get hit by sunlight, a photocatalytic process turns the NOx from air pollutant to a water soluble nitrate NO-3.

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