Impact of Thickness of Columnar Crystal TiO2 Film on Photocatalytic Activity of FTO/TiO2 Coated Glass

doi:10.3724/SP.J.1077.2012.00633

Abstract

Abstract: Columnar crystal structured TiO₂ thin films were prepared on the FTO (SnO₂: F) low-emissivity coated glass substrates, obtaining double-layer structure FTO/TiO₂ coated glass samples. The effect of TiO₂ film thickness on the photocatalytic activity, the low-emissivity performance and light transmission properties of the FTO/TiO₂ coated glass samples was investigated. The results showed that the photocatalytic activity of the samples increased firstly and then decrease with the increase of the film thickness. The best catalytic activity was observed for the sample coated with 300 nm TiO₂ film. The low-emissivity properties of the samples declined as the TiO₂ film thickness increased. The sample still have some low-emissivity performance when the TiO₂ film thickness is 300 nm, while the light transmittance of the samples have little relations with the TiO₂ films thickness. The visible light transmittances of the samples remain at about 72% with a smooth surface. The average surface roughness of the sample is about 1 nm. The FTO/TiO₂ coated glass has photocatalytic self-cleaning properties with excellent low emissive performance and light transmittance property, thus guaranteeing good application prospects.

Key words: FTO/TiO₂, Sol-Gel, columnar crystal, photocatalytic activity, glass

CLC Number:

TM23

TENG Fan, LIU Yong, GE Yan-Kai, ZHANG Rui-Shuo, SONG Chen-Lu, HAN Gao-Rong. Impact of Thickness of Columnar Crystal TiO₂ Film on Photocatalytic Activity of FTO/TiO₂ Coated Glass[J]. Journal of Inorganic Materials, 2012, 27(6): 633-637.

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Impact of Thickness of Columnar Crystal TiO₂ Film on Photocatalytic Activity of FTO/TiO₂ Coated Glass

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