Kinetics of TiO2 Photochromic Response in Different Hole Scavenging Solvents
Photochemical and Photobiological Sciences 2020
Raivis Eglītis, Anzelms Zukuls, Roman Viter, Andris Šutka

There has recently been a renewed interest in the photochromic properties and uses of TiO2 as a poten- tial candidate for smart windows. However, the surrounding medium of TiO2 nanoparticles (NPs) is of equal importance, as it facilitates hole scavenging and, in turn, photochromism. Here, we investigated the impact of scavenging power on the photochromic properties of TiO2. TiO2 NP colloids in these solvents exhibit a photochromic response in a broad wavelength range from the visible to near-infrared region. We have shown that solvents such as ethanol have the best hole scavenging properties among the alcohols tested. The response can be further modified by the addition of a supplementary hole scavenger, such as hydroxylamine. The photochromism of TiO2 is fully reversible and could be used for applications in smart windows.


Eglītis, R., Zukuls, A., Viter, R., Šutka, A. Kinetics of TiO2 Photochromic Response in Different Hole Scavenging Solvents. Photochemical and Photobiological Sciences, 2020, Vol. 19, No. 8, pp.1072-1077. ISSN 1474-905X. e-ISSN 1474-9092. Available from: doi:10.1039/d0pp00079e

Publication language
English (en)
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