Posted: May 5, 2012 by Wildcat in Uncategorized
Tags: , , ,

Last week that giant multinational of aluminum production Alcoa announced its new “smog-eating” architectural panels – in other words cladding stuck to a building’s exterior that can remove pollutants from the surrounding air. The aluminum panels, branded Reynobond with EcoClean technology, have a titanium dioxide coating which breaks down pollutants in direct sunlight. Of course the purifying properties of titanium dioxide are well known, and have been widely applied, both in so-called self-cleaning applications, such as an experimental cotton treatment; and products such as lightbulbs that purify the air in a room. We’ve even seen research products to apply titanium dioxide, also known as titania, to water purification systems. Titanium dioxide is really rather useful. Because of its brilliant whiteness, the naturally-occurring compound is commonly used as a pigment in paints, plastics and papers, as well as food and medicines. Added to skimmed milk, it’s thought to increase palatability. Its ability to absorb ultraviolet radiation make it a commonly used ingredient in sunscreen. (via Alcoa announces “smog-eating” architectural panels)

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