Environmental Science and Pollution Research

, Volume 21, Issue 19, pp 11208–11217 | Cite as

Development of a versatile experimental setup for the evaluation of the photocatalytic properties of construction materials under realistic outdoor conditions

  • S. Suárez
  • R. Portela
  • M. D. Hernández-Alonso
  • B. Sánchez
Photocatalysis: new highlights from JEP 2013


The interest on outdoor photocatalytic materials is growing in the last years. Nevertheless, most of the experimental devices designed for the assessment of their performance operate at controlled laboratory conditions, i.e., pollutant concentration, temperature, UV irradiation, and water vapor contents, far from those of real outdoor environments. The aim of the present study was the design and development of an experimental device for the continuous test of photocatalytic outdoor materials under sun irradiation using real outdoor air as feed, with the concomitant fluctuation of pollutant concentration, temperature, and water vapor content. A three-port measurement system based on two UV-transparent chambers was designed and built. A test chamber contained the photoactive element and a reference chamber to place the substrate without the photoactive element were employed. The third sampling point, placed outdoors, allowed the characterization of the surrounding air, which feeds the test chambers. Temperature, relative humidity (RH), and UV-A irradiance were monitored at each sampling point with specific sensors. NO x concentration was measured by a chemiluminescence NO x analyzer. Three automatic valves allowed the consecutive analysis of the concentration at the three points at fixed time intervals. The reliability of the analytical system was demonstrated by comparing the NO x concentration data with those obtained at the nearest weather station to the experimental device location. The use of a chamber-based reaction system leads to an attenuation of NO x and atmospheric parameter profiles, but maintaining the general trends. The air characterization results showed the wide operating window under which the photoactive materials should work outdoors, depending on the traffic intensity and the season, which are reproduced inside the test chambers. The designed system allows the measurement of the photoactivity of outdoor materials or the comparison of several samples at the same time. The suitability of the system for the evaluation of the DeNO x properties of construction elements at realistic outdoor conditions was demonstrated. The designed experimental device can be used 24/7 for testing materials under real fluctuations of NO x concentration, temperature, UV irradiation, and relative humidity and the presence of other outdoor air pollutants such as VOCs, SO x , or NH3. The chamber-based design allows comparing a photocatalytic material with respect to a reference substrate without the photoactive phase, or even the comparison of several outdoor elements at the same time.


Photocatalysis Nitrogen oxides DeNOx Photocatalytic reactor Construction and building materials Asphalt 



The authors would like to acknowledge the Centre for Industrial Technological Development (CDTI) and the Spanish Ministry of Science and Technology (CMT 2011-25093, Ramón y Cajal and Juan de la Cierva Program) for the financial support. The authors would like to thank Mr. Raul Matesanz for his help with the experimental setup.


  1. Ballari MM, Hunger M, Husken G, Brouwers HJH (2010) Modelling and experimental study of the NOx photocatalytic degradation employing concrete pavement with titanium dioxide. Catal Today 151(1–2):71–76CrossRefGoogle Scholar
  2. Ballari MM, Brouwers HJH (2013) Full scale demonstration of air-purifying pavement. J Hazard Mater 254–255:406–414CrossRefGoogle Scholar
  3. Cámara R (2012) Immobilization of TiO2 on transparent organic polymers in the UV-a for the photocatalytic elimination trichloroethylene in air. PhD Thesis, Universidad Politécnica de Madrid.Google Scholar
  4. Cámara R, Crespo L, Portela R, Suárez S, Bautista L, Gutiérrez-Martin F, Sánchez B (2013) Enhanced photocatalytic activity of TiO2 thin films on plasma-pretreated organic polymers. Catal Today doi: 10.1016/j.cattod.2013.10.049
  5. Changgeng C (2008) Double-chamber type nano photocatalytic air purifier: CN2809481Google Scholar
  6. Chen J, Poon CS (2009) Photocatalytic construction and building materials: from fundamentals to applications. Build Environ 44(9):1899–1906CrossRefGoogle Scholar
  7. Chen M, Chu JW (2011) NOx photocatalytic degradation on active concrete road surface—from experiment to real-scale application. J Clean Prod 19(11):1266–1272CrossRefGoogle Scholar
  8. Dalton JS, Janes PA, Jones NG, Nicholson JA, Hallam KR, Allen GC (2002) Photocatalytic oxidation of NOx gases using TiO2: a surface spectroscopic approach. Environ Pollut 120(2):415–422CrossRefGoogle Scholar
  9. de Melo JVS, Trichês G, Gleize PJP, Villena J (2012) Development and evaluation of the efficiency of photocatalytic pavement blocks in the laboratory and after one year in the field. Constr Build Mater 37:310–319CrossRefGoogle Scholar
  10. Dillert R, Stötzner J, Engel A, Bahnemann DW (2012) Influence of inlet concentration and light intensity on the photocatalytic oxidation of nitrogen(II) oxide at the surface of Aeroxide® TiO2 P25. J Hazard Mater 211–212:240–246CrossRefGoogle Scholar
  11. EC Directive (2008) Directive 2008/50/EC of the European Parliament and of the Council of 21 May 2008 on ambient air quality and cleaner air for EuropeGoogle Scholar
  12. Fresno F, Portela P, Suárez S, Coronado JM (2014) Photocatalytic materials: recent achievements and near future trends. J Mater Chem A 2:2863–2884CrossRefGoogle Scholar
  13. Fujishima A, Zhang X, Tryk DA (2008) TiO2 photocatalysis and related surface phenomena. Surf Sci Rep 63(12):515–582CrossRefGoogle Scholar
  14. Guerrini GL (2012) Photocatalytic performances in a city tunnel in Rome: NOx monitoring results. Constr Build Mater 27(1):165–175CrossRefGoogle Scholar
  15. Hossain MM, Raupp GB, Tempe A, Hay SO, Obee TN (1999) Three-dimensional developing flow model for photocatalytic monolith reactors. AIChE J 45(6):1309–1321CrossRefGoogle Scholar
  16. Hüsken G, Hunger M, Brouwers HJH (2009) Experimental study of photocatalytic concrete products for air purification. Build Environ 44:2463–2474.Google Scholar
  17. ISO22197-1 (2007) Fine ceramics (advanced ceramics, advanced technical ceramics)—test method for air purification performance of semiconducting photocatalytic materials—part 1: removal of nitric oxide. First editionGoogle Scholar
  18. Kartheuser B, Costarramone N, Pigot T, Lacombe S (2012) NORMACAT project: normalized closed chamber tests for evaluation of photocatalytic VOC treatment in indoor air and formaldehyde determination. Environ Sci Pollut R 19(9):3763–3771CrossRefGoogle Scholar
  19. Lasek J, Yu Y-H, Wu JCS (2013) Removal of NOx by photocatalytic processes. J Photoch Photobio C 14:29–52CrossRefGoogle Scholar
  20. Lee J, Mahendra S, Alvarez PJJ (2010) Nanomaterials in the construction industry: a review of their applications and environmental health and safety considerations. ACS Nano 4(7):3580–3590CrossRefGoogle Scholar
  21. Maggos T, Bartzis JG, Liakou M, Gobin C (2007) Photocatalytic degradation of NOx gases using TiO2-containing paint: a real scale study. J Hazard Mater 146(3):668–673CrossRefGoogle Scholar
  22. Pacheco-Torgal F, Jalali S (2011) Nanotechnology: advantages and drawbacks in the field of construction and building materials. Constr Build Mater 25(2):582–590CrossRefGoogle Scholar
  23. Ming F, Jiawei F (2010) High-efficient photocatalytic air reactor: CN201423037Google Scholar
  24. Hui YY, Chi Sheng WJ, Ping TD, Ji HH, Chi CT, Wei LT (2008) Optical fiber photocatalytic reactor and process for the decomposition of nitric oxide using said reactor: US2008308405A1Google Scholar
  25. Paz Y (2010) Application of TiO2 photocatalysis for air treatment: patents’ overview. Appl Catal B 99(3–4):448–460CrossRefGoogle Scholar
  26. Ruot B, Plassais A, Olive F, Guillot L, Bonafous L (2009) TiO2-containing cement pastes and mortars: measurements of the photocatalytic efficiency using a rhodamine B-based colourimetric test. Sol Energy 83(10):1794–1801CrossRefGoogle Scholar
  27. Sánchez B, Cardona AI, Romero M, Avila P, Bahamonde A (1999) Influence of temperature on gas-phase photo-assisted mineralization of TCE using tubular and monolithic catalysts. Catal Today 54:369–377CrossRefGoogle Scholar
  28. Sánchez B, Suárez S, Hernández-Alonso MD, Portela R (2013) Sistema de ensayo de eficiencia fotocatalítica: ES1087480 UGoogle Scholar
  29. Strini A, Cassese S, Schiavi L (2005) Measurement of benzene, toluene, ethylbenzene and o-xylene gas phase photodegradation by titanium dioxide dispersed in cementitious materials using a mixed flow reactor. Appl Catal B 61:90–97CrossRefGoogle Scholar
  30. Shunichi A (2007) Photocatalyst activity evaluation device: JP2007298328Google Scholar
  31. Suárez S, Hernandez-Alonso, MD, Peset J, Sánchez B. Conference (2012) Evaluation of the photocatalytic performance of construction materials for atmospheric depollution at laboratory scale. SPEA7 P64, p. 68Google Scholar
  32. Suárez S (2013) Immobilized photocatalysts. In: Coronado JM, Fresno F, Hernández-Alonso MD, Portela R (eds) Design of advanced photocatalytic materials for energy conversion and environmental applications. Springer, London, pp 245–267CrossRefGoogle Scholar
  33. Velayos M, Pozo García JL, Pozo García FJ (2009) Autonomous air quality controller device using a multifunctional chemisorbent-photocatalytic material: ES2289850Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • S. Suárez
    • 1
  • R. Portela
    • 2
  • M. D. Hernández-Alonso
    • 1
  • B. Sánchez
    • 1
  1. 1.FOTOAIR Group Renewable Energy DivisionCIEMATMadridSpain
  2. 2.Institute of Catalysis and Petrochemistry (ICP)CSICMadridSpain

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