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Tuesday, 20 August 2019
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Raw materials & technologies, Technologies, Nanotechnology

Concrete coating disintegrates air pollutants

Thursday, 14 June 2012

Researchers in Spain have developed a coating based on nanoparticles that interact with sunlight and trigger chemical reactions which clean the air.

The new concrete coating is based on nanoparticles

Source: Roman Milert/Fotolia

The new concrete coating is based on nanoparticles

Source: Roman Milert/Fotolia

As a final result of the "Ecofotomat” project, researchers in Spain have developed a new coating for construction materials. The coating is based on nanoparticles that interact with sunlight and trigger a chemical reaction that disintegrates certain air pollutants.

The project is a collaboration of the L'Urederra R+D Centre, the construction company Obras y Servicios TEX S.L. and the UPNA-Public University of Navarre. Researchers of the university have developed the coating, which is based on nanoparticles that interact with sunlight and trigger a chemical reaction that eliminates certain air pollutants. It is reckoned that the reduction in atmospheric pollution could be 90 % of nitrogen oxides, 80 % of hydrocarbons, and 75 % of carbon monoxides emitted.

Final aim: a marketable product

As the researcher Javier Goicoechea explains, the coatings "have special nanoparticles with a photocatalytic effect; the nanoparticles interact with the light, thus triggering a series of chemical reactions that clean the air and break down the dirt.” In this project, work is being done with concrete as the basic construction material. L'Urederra manufactures the nanoparticles and adapts them so that they can be incorporated into the coatings, and the company TEX provides the concrete and the technical specifications on the building material, since the final aim of the project is to obtain a marketable product.

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