The photocatalytic treatment of gaseous benzene under visible light irradiation was developed using electrospun carbon nanotube/titanium dioxide (CNT/TiO 2 ) nanofibers as visible light active photocatalysts. Wongaree, Mathana Chiarakorn, Siriluk Chuangchote, Surawut Sagawa, Takashi Photocatalytic performance of electrospun CNT/TiO2 nanofibers in a simulated air purifier under visible light irradiation. A good correlation between the standard experiments and the experimental room experiments was found, even if in the latter case, the concentration of lower weight VOCs drops less quickly than that of heavier VOCs. Standardized tests are useful to rank photocatalytic air purifiers and passive materials and to discard inefficient ones. The safety of the commercial products was also assessed by the determination of nanoparticle release. With two efficient air purifiers, these laboratory experiments were compared to the results in two experimental rooms (35-40 m 3 ) where air pollution was introduced through wooden floor and furniture. Experimental data were obtained for four selected commercial devices and three commercial materials: drop of VOC concentration, but also identification of secondary species (with special attention to formaldehyde), mineralization rates, and Clean Air Delivery Rate (CADR). The photocatalytic function is demonstrated by the mineralization of a mixture of five VOCs. Concerning prototype or commercial indoor photocatalytic air purifiers designed for volatile organic compounds (VOC) abatement, the methodology is based on a laboratory airtight chamber. Photocatalytic air purifiers for indoor air: European standard and pilot room experiments.Ĭostarramone, N Cantau, C Desauziers, V Pécheyran, C Pigot, T Lacombe, SĪt the European level (CEN/TC386), some efforts are currently devoted to new standards for comparing the efficiency of commercial photocatalytic material/devices in various application fields.
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