Usually you do this <!--emo&:p--><img src='http://www.unknownworlds.com/forums/html//emoticons/tounge.gif' border='0' style='vertical-align:middle' alt='tounge.gif' /><!--endemo-->:
<!--QuoteBegin--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> </td></tr><tr><td id='QUOTE'><!--QuoteEBegin--><span style='font-size:13pt;line-height:100%'>The paint that ate smog</span> February 5, 2004
European scientists have devised a paint that soaks up nitrogen oxide gases emitted by vehicle exhausts, a pollution source that can cause smog and respiratory problems.
The substance, Ecopaint, will go on sale next month and, when painted on the side of buildings, should be able to soak up nitrogen oxides (NOx) for five years until its novel coating is exhausted, New Scientist says.
The secret lies in spherical nanoparticles of titanium dioxide and calcium carbonate that are just 30 nanometres (30 billionths of a metre) across, mixed into a silicon-based polymer, polysiloxane.
The particles are so tiny that the paint is clear, and pigment can be added to make the desired colour.
The polysiloxane is relatively porous, and lets the NOx gases diffuse through it, so that they adhere to the particles of titanium dioxide.
The particles absorb ultraviolet radiation from sunlight, and the energy from this converts NOx in a chemical reaction to nitric acid, which is neutralised by the calcium carbonate, an alkaline.
That produces "harmless quantities" of carbon dioxide, water and calcium nitrate, which wash away, the article, which is published in next Saturday's issue of New Scientist says.
The product was invented by a British company, Millennium Chemicals, under a European Union-funded program to help improve air quality in cities.
An experiment conducted with a similar catalytic coating, which was painted on a stretch of road in Milan, Italy, in 2000, reduced levels of NOx at street level by 60 per cent, and residents reported they found it noticeably easier to breathe.
So.. what happens when the pollution is out of our air but simply covering our walls? I don't think that all that smog condenced into a solid form would be healthy. No way it can break it all down. :P
from the way i understood it, it converted the pollution into other harmless chemicals...
sounds good though
just need to figure out how to remove it every 5 years <!--emo&:)--><img src='http://www.unknownworlds.com/forums/html//emoticons/smile.gif' border='0' style='vertical-align:middle' alt='smile.gif' /><!--endemo-->
Either way, even if it <i>didn't</i> break down the smog into less harmful chemicals, concentrating it on walls is a Good Thing. That way it's not in the air. Basically, it turns anything painted with this stuff into a giant filter. All you'd have to do is scrub the buildings.
Comments
<!--QuoteBegin--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> </td></tr><tr><td id='QUOTE'><!--QuoteEBegin--><span style='font-size:13pt;line-height:100%'>The paint that ate smog</span>
February 5, 2004
European scientists have devised a paint that soaks up nitrogen oxide gases emitted by vehicle exhausts, a pollution source that can cause smog and respiratory problems.
The substance, Ecopaint, will go on sale next month and, when painted on the side of buildings, should be able to soak up nitrogen oxides (NOx) for five years until its novel coating is exhausted, New Scientist says.
The secret lies in spherical nanoparticles of titanium dioxide and calcium carbonate that are just 30 nanometres (30 billionths of a metre) across, mixed into a silicon-based polymer, polysiloxane.
The particles are so tiny that the paint is clear, and pigment can be added to make the desired colour.
The polysiloxane is relatively porous, and lets the NOx gases diffuse through it, so that they adhere to the particles of titanium dioxide.
The particles absorb ultraviolet radiation from sunlight, and the energy from this converts NOx in a chemical reaction to nitric acid, which is neutralised by the calcium carbonate, an alkaline.
That produces "harmless quantities" of carbon dioxide, water and calcium nitrate, which wash away, the article, which is published in next Saturday's issue of New Scientist says.
The product was invented by a British company, Millennium Chemicals, under a European Union-funded program to help improve air quality in cities.
An experiment conducted with a similar catalytic coating, which was painted on a stretch of road in Milan, Italy, in 2000, reduced levels of NOx at street level by 60 per cent, and residents reported they found it noticeably easier to breathe.
<b>AFP</b><!--QuoteEnd--></td></tr></table><div class='postcolor'><!--QuoteEEnd-->
It's interesting. I assume they'll have to design some kind of way of removing it so that it can be replaced relatively painlessly every five years.
So..
what happens when the pollution is out of our air but simply covering our walls? I don't think that all that smog condenced into a solid form would be healthy. No way it can break it all down. :P
sounds good though
just need to figure out how to remove it every 5 years <!--emo&:)--><img src='http://www.unknownworlds.com/forums/html//emoticons/smile.gif' border='0' style='vertical-align:middle' alt='smile.gif' /><!--endemo-->