UJI validates the viability of cooling and photocatalytic pigments that reduce building temperatures and clean up air pollution



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## UJI validates the viability of cooling and photocatalytic pigments that reduce building temperatures and clean up air pollution

08/01/2019 |
SCP

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Image resource pigments-refrescants-fotocatalitics Prujecte\_Quimica\_DLL13
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The Group of Inorganic Environmental Chemistry and Ceramic Materials of the Universitat Jaume I de Castelló has developed a research project for the valorisation, transfer and exploitation of cool pigments and scheelite-based photocatalysts that serve to reduce the temperature of buildings and also to absorb part of the environmental pollution.

Over the last few months, research staff have carried out tests on the effectiveness of the pigments on the roof of the UJI's School of Technology and Experimental Sciences building, with funding from the Valencian Innovation Agency (AVI), in which they have observed that the photocatalytic pigments used were capable of reducing air pollution by nearly 20%, especially nitrogen oxides (NOx), volatile organic compounds (VOCs) or carbon monoxide (CO).

The team has also tested cooling pigments that present a high infrared reflectance, rejecting infrared radiation rays from buildings and lowering the surface temperature by about three degrees and avoiding the effect of the island of urban heat, which is when the dark surfaces and asphalted surfaces of cities absorb energy from the sun and then release it slowly, thus causing the temperature of urban areas to be higher than that of its surroundings and also increasing the likelihood of smog formation (polluting clouds).

The project has been developed by researchers Guillermo Monrós, Vicente Esteve and Mario Llusar with the collaboration of Arnau Monrós and Sara Cerro from the Department of Inorganic and Organic Chemistry of the Universitat Jaume I.

**Images:** Presentation of the results of the project.

**Author:** Damián Llorens

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