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http://hdl.handle.net/10773/20861
Title: | Incorporation of titanium dioxide nanoparticles in mortars - Influence of microstructure in the hardened state properties and photocatalytic activity |
Author: | Lucas, S. S. Ferreira, V. M. Barroso de Aguiar, J. L. |
Keywords: | INDOOR AIR-QUALITY HETEROGENEOUS PHOTOCATALYSIS BUILDING-MATERIALS CONCRETE PAVEMENT TIO2 OXIDATION DEGRADATION PRODUCTS WATER PHOTOACTIVITY |
Issue Date: | 2013 |
Publisher: | PERGAMON-ELSEVIER SCIENCE LTD |
Abstract: | The environmental pollution in urban areas is one of the causes for poor indoor air quality in buildings, particularly in suburban areas. The development of photocatalytic construction materials can contribute to clean the air and improve sustainability levels. Previous studies have focused mainly in cement and concrete materials, disregarding the potential application in historic buildings. In this work, a photocatalytic additive (titanium dioxide) was added to mortars prepared with aerial lime, cement and gypsum binders. The main goal was to study the way that microstructural changes affect the photocatalytic efficiency. The photocatalytic activity was determined using a reactor developed to assess the degradation rate with a common urban pollutant, NOR. The laboratory results show that all the compositions tested exhibited high photocatalytic efficiency. It was demonstrated that photocatalytic mortars can be applied in new and old buildings, because the nanoadditives do not compromise the mortar hardened state properties. (C) 2012 Elsevier Ltd. All rights reserved. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/20861 |
DOI: | 10.1016/j.cemconres.2012.09.007 |
ISSN: | 0008-8846 |
Publisher Version: | 10.1016/j.cemconres.2012.09.007 |
Appears in Collections: | CICECO - Artigos |
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Incorporation of titanium dioxide nanoparticles in mortars - Influence of microstructure in the hardened state properties and photocatalytic activity_10.1016j.cemconres.2012.09.007.pdf | 847.12 kB | Adobe PDF |
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