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Effect of Pore Size on the Hydrophilicity in Dark of TiO2 Films

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Abstract:

Mesoporous TiO2 films was prepared by evaporation-induced self-assembly and dip-coating method. And the pore size of the TiO2 films is adjusted by controlling the molar ratio of H2O/TiO2 (H value). Water contact angle was chosen to represent the hydrophilic property, and XRD and AFM were carried out to characterize the films. With the increase of H value, the pore size increased firstly then decreased. And when H is 15, the pore size is the biggest, which hydrophilicity in dark is the best too. With the extention of the non-irridation time, the hydrophilicity is worse. And the reason may be ascribed to the adsorption of organic matter in air.

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Periodical:

Applied Mechanics and Materials (Volumes 130-134)

Pages:

1049-1053

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.130-134.1049

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Online since:

October 2011

Authors:

Qi Wang, Cheng Pu Lin, Peng Cui

Keywords:

Hydrophilicity in Dark, Pore Size, TiO2 Film

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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