Published in Horizon, 18 Dec 2014
Dull, grey and boring: concrete may not be much to look at, but – along with other basic materials like paint – it is being upgraded so it can clean up pollution.
The development comes down to the introduction of photocatalysts – substances that promote chemical reactions using only the sun’s rays as input. When the photocatalysts are incorporated into a material such as concrete, they trap pollutants and convert them into clean products. […]
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