Synthesis, wettability and optical properties of xTiO 2 - (1-x) SiO 2 composite thin films

xTiO 2 - (1-x) SiO 2 composite thin films with x=1.0, 0.9, 0.7, 0.5 were dip-coated on glass substrates by sol-gel method. The effects of composition on the microstructure, wettability and optical properties were investigated by X-ray diffraction (XRD), contact angle tester and ultraviolet visible s...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-01, Vol.738 (1), p.12032
Main Authors: Wang, Jun, Bai, Lingyun, Xiao, Yueyuan, Luo, Yuhong, Zhu, Binghua, Zhang, Wenjuan
Format: Article
Language:English
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Summary:xTiO 2 - (1-x) SiO 2 composite thin films with x=1.0, 0.9, 0.7, 0.5 were dip-coated on glass substrates by sol-gel method. The effects of composition on the microstructure, wettability and optical properties were investigated by X-ray diffraction (XRD), contact angle tester and ultraviolet visible spectrophotometer. Results showed that only the anatase diffraction peaks of TiO 2 were found in composite materials. With the increase of SiO 2 concentration, the crystallization degree of the composite material decreased slightly. The hydrophilicity was enhanced after coating on glass substrates. The water contact angle of TiO 2 film was the smallest in all the films. All the composite films were transparent in visible wavelength. And the average transmittance of 0.5TiO 2 -0.5SiO 2 was highest. The sharp decrease of transmittance was observed in the transmittance spectra, which was related to absorption of photos by electron in valence band.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/738/1/012032