Photo-catalytically active coatings can help reduce nitrogen oxides

Published on December 21, 2012 at 11:04 AM · No Comments

Surfaces with photo-catalytic characteristics clean the air off nitrogen oxides and other health-endangering substances. Using a new test procedure, Fraunhofer researchers can find out how the coatings behave during a long-term test. They will introduce the test at the booth of the Fraunhofer Building Innovation Alliance in Booth 131 / 135 in Hall C2 at the Trade Fair BAU that will take place from 14 - 19 January, 2013, in Munich, Germany.

The Seventies: Smog alert in the Ruhr area, acid rain, dying spruce trees in the Bavarian Forest. In those days, the solution was filter systems for the smokestacks in the Ruhr area. Today, people in the urban areas are suffering from high levels of pollution that is being caused by, among other things, automotive traffic. Particularly undesired: the nitrogen oxides (NOX). In the meantime, the European Union tightened the limit values even further; in many communities they are being exceeded. Michael Hüben of the Fraunhofer Institute for Molecular Biology and Applied Ecology IME in Schmallenberg, Germany, knows that "on stretches with heavy traffic there is a particular need for action." During the next two years, the Fraunhofer researchers want to examine in the project "Effectiveness of photo-catalytic removal of nitrogen oxide on coated building test panels" how photo-catalytic surfaces contribute to the removal of NOx and how the coatings prove themselves during long-term operation. On behalf of the German Federal Ministry of Transport, the German Federal Highway Research Institute is sponsoring and supporting the project. The process will be introduced at the 2013 BAU trade fair at the joint booth of the Fraunhofer Building Innovation Alliance.

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