11 May '11, 5am

Alcoa Turns Buildings into Pollution-Eating “Trees”

Titanium dioxide is used in a startling array of products, from skim milk and house paint to tooth paste and medications, and now it’s being put to work in the sustainable future. One example is a new surface treatment for concrete and asphalt roads developed by the company Pureti, which creates a photocatalytic reaction to break down air pollutants including nitrogen oxide and sulfur dioxide (a photocatalytic reaction is a process speeded up by the presence of light). At Lawrence Berkeley National Laboratory, researchers are using nanocrystals of titanium dioxide to develop a more energy efficient way to produce hydrogen for fuel cells

Full article: http://cleantechnica.com/2011/05/10/alcoa-turns-buildings...

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