caa a22 4500 463212371 CHVBK 20180405153145.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s00339-007-4033-6 doi (NATIONALLICENCE)springer-10.1007/s00339-007-4033-6 Application of photocatalytic technology for NOx removal [Elektronische Daten] [T. Maggos, J.G. Bartzis, P. Leva, D. Kotzias] Materials that contain a photocatalyst have a semi-permanent capacity for removing harmful gases from the ambient air. It is the purpose of this study to investigate the photocatalytic activity of commercial paints containing TiO2 nanoparticles towards NO and NO2. Experiments were carried out in a stainless steel (30m-3) walk-in type environmental chamber (Indoortron), under "real world setting” conditions of temperature, relative humidity, irradiation and pollutant concentrations. Two types of nanoparticle TiO2-containing paints were tested for their depolluting properties: a mineral silicate paint and a water-based styrene acrylic paint. The results showed a significant effect of TiO2-materials in reducing NOx. It was found that up to 74% of NO and 27% of NO2 were photo-catalytically degraded by the mineral silicate paint, while degradation percentage using the styrene acrylic paint reached 91% and 71% for NO and NO2, respectively. The photo-catalytic rate of NO on the mineral and styrene acrylic paint was calculated to 0.11μg m-2 s and 0.18μg m-2 s, respectively, indicating higher photocatalytic performance of the organic based material. The effect of relative humidity (RH) was also investigated. An increase of RH from 20% to 50% inhibited the NOx photocatalysis on the surface of the samples. Springer-Verlag, 2007 Maggos T. Environmental Research Laboratory, INT-RP, NCSR ‘Demokritos', 15310 Ag. Paraskevi, Athens, Greece aut Bartzis J.G. Department of Energy Resources Engineering, University of West Macedonia, 51100, Kozani, Greece aut Leva P. Institute for Health and Consumer Protection, JRC/European Commission, 21020, Ispra (VA), Italy aut Kotzias D. Institute for Health and Consumer Protection, JRC/European Commission, 21020, Ispra (VA), Italy aut Applied Physics A Springer-Verlag 89/1(2007-10-01), 81-84 0947-8396 89:1<81 2007 89 339 https://doi.org/10.1007/s00339-007-4033-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-007-4033-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Maggos T. Environmental Research Laboratory, INT-RP, NCSR ‘Demokritos', 15310 Ag. Paraskevi, Athens, Greece aut NATIONALLICENCE 700 1- Bartzis J.G. Department of Energy Resources Engineering, University of West Macedonia, 51100, Kozani, Greece aut NATIONALLICENCE 700 1- Leva P. Institute for Health and Consumer Protection, JRC/European Commission, 21020, Ispra (VA), Italy aut NATIONALLICENCE 700 1- Kotzias D. Institute for Health and Consumer Protection, JRC/European Commission, 21020, Ispra (VA), Italy aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 89/1(2007-10-01), 81-84 0947-8396 89:1<81 2007 89 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer