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Monday, 16 September 2019
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Raw materials & technologies, Science today - coatings tomorrow

Incorporating TiO2-nanoparticles in mortars

Thursday, 6 December 2012

Portuguese researchers investigated the way microstructural changes affect the photocatalytic efficiency.

Photocatalytic mortars can be applied in new and old buildings / Source: Fotolia

Photocatalytic mortars can be applied in new and old buildings / Source: Fotolia

Besides cement and concrete materials, scientists also focused on potential application in historic buildings. With this aim titanium dioxide was added to mortars prepared with aerial lime, cement and gypsum binders.

The authors of the study, S.S. Lucasa, V.M. Ferreiraa and J.L. Barroso de Aguirab, determined the photocatalytic activity using a reactor developed to assess the degradation rate with a common urban pollutant, NOx. The laboratory results show that all the compositions tested exhibited high photocatalytic efficiency. According to the results, photocatalytic mortars can be applied in new and old buildings, because nanoadditives do not compromise the mortar hardened state properties.

Read the complete article "Incorporation of titanium dioxide nanoparticles in mortars — Influence of microstructure in the hardened state properties and photocatalytic activity” in Cement and Concrete Research, January 2013, vol. 43, pp. 112-120.

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