Transparent TiO₂ thin films with high photocatalytic activity for indoor air purification

Abstract

Enhanced photocatalytic oxidation of indoor VOC mixtures on transparent polycrystalline spray-deposited TiO2 thin films under ultraviolet and visible light.

Development of spray pyrolysis-synthesised Bi2O3 thin films for photocatalytic applications

“… 21 This TiO 2 film showed enhanced photocatalytic activity for stearic acid 21 and volatile organic compound oxidation. 33 …”

“…The material and photocatalytic properties of the obtained lm were studied in detail in previous papers. 21,32,33…”

“…21 This TiO 2 lm showed enhanced photocatalytic activity for stearic acid 21 and volatile organic compound oxidation. 33 For a better comparison of the photocatalytic activity, the photodegradation rate constants (k) were calculated (Fig. 6a).…”

Cost modeling of photocatalytic decomposition of atmospheric methane and nitrous oxide

“…Measuring known catalysts' rates at dilute concentrations would be a useful first step. Given the low (0.01%-0.1%) AQYs often observed for photocatalysts reacting other dilute substances like volatile organic compounds, achieving the AQY targets that this study sets, especially those ⩾1%, would require fundamental research to greatly increase photocatalysts' AQYs [63,64]. Reductions in photocatalyst fouling and deactivation would also be essential for any ground-based system but matter less for aerosols, which only stay active for days.…”

Spray-Pyrolysis Synthesised TiO2 Thin Films for Photocatalytic Air Treatment from Volatile Organic Compounds

“…At first, the photocatalytic activity of all obtained films was estimated by the degradation of 8.8 mM stearic acid (SA) deposited on top of the film [1]. In the second step of the studies, TiO 2 films were tested for the oxidation of VOCs (acetone, acetaldehyde, heptane and toluene) as separate pollutants in the concentration ranges 5-40 ppm [2] and as 9 ppm VOCs mixtures [3]. The oxidation of VOCs was studied in the gas-phase, multi-section reactor under ultraviolet and visible light.…”