Photocatalysis with titanium dioxide is a promising method for breaking down environmental pollutants. This is based on the photoactive properties of TiO2 as a light-sensitive semi-conductor that absorbs electromagnetic UV radiation. Evonik’s AEROXIDE® titanium dioxide products are excellent photocatalysts, characterized by their very high surface area and their mixed anatase and rutile crystal composition. This photoactivity can be used to purify air, remove toxic contaminations in wastewater, or to remove soot and other organic dirt particles from buildings or noise protection walls. AEROXIDE® TiO2 P 25 or its liquid dispersion AERODISP® W 740 X are popular choices to take advantage of photocatalytic effect and the fold