Abstract
In the present work, anatase TiO2 films are prepared by sol–gel spin coating method. The structural and optical properties of the films have been studied at different post-annealing temperatures. The photocatalytic activity and electrochromic performance of the films are investigated. The films annealed at 400°C exhibit the highest photocatalytic activity with a rate constant of 4.56×10−3min−1. The electrochromic performance for the films annealed at 400°C expressed in terms of difference in optical density (ΔOD) at 550nm between coloured and bleached state is 0.5493. This combination of photocatalysis and electrochromism makes the sol–gel derived titania thin films as promising candidates for self-cleaning smart window applications.
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