INTEC   05402
INSTITUTO DE DESARROLLO TECNOLOGICO PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
artículos
Título:
Efficiencies Evaluation of Photocatalytic Paints Under Indoor and Outdoor Air Conditions
Autor/es:
RELI, MARTIN; BALLARI, MARÍA DE LOS MILAGROS; ALFANO, ORLANDO M.; SALVADORES, FEDERICO; KOCÍ, KAMILA; RELI, MARTIN; BALLARI, MARÍA DE LOS MILAGROS; ALFANO, ORLANDO M.; SALVADORES, FEDERICO; KOCÍ, KAMILA
Revista:
Frontiers in Chemistry
Editorial:
ACS Publications
Referencias:
Lugar: Washington; Año: 2020 vol. 8 p. 551710 - 551710
Resumen:
The removal of indoor and outdoor airpollutants is crucial to prevent environmental and health issues.Photocatalytic buildingmaterials are an energy-sustainable technology that cancompletely oxidize pollutants, improving in situ the air quality of contaminatedsites. In this work, different photoactive TiO2 catalysts (anatase ormodifiedanatase) and amounts were used to formulate photocatalytic paints inreplacement of the normally used TiO2 (rutile) pigment. These paints weretested in two different experimental systems simulating indoor and outdoorenvironments. In one, indoor illumination conditions were used in thephotoreactor for the oxidation of acetaldehyde achieving conversions between 37and 55%. The other sets of experiments were performed under simulated outdoor radiationfor the degradation of nitric oxide, resulting in conversions between 13 and 35%.This wide range of conversions made it difficult to directly compare thepaints. Thus, absorption, photonic, and quantum efficiencies were calculated toaccount for the paints photocatalytic performance. It was found that theformulations containing carbon-doped TiO2 presented the best efficiencies. Thepaint with the maximum amount of this photocatalyst showed the highestabsorption and photonic efficiencies. On the other hand, the paint with thelowest amount of carbon-doped TiO2 presented thE highest value of quantumefficiency, thus becoming the optimal formulation in terms of energy use.