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Calcination Conditions on the Properties of Porous TiO2 Film

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Abstract

Porous TiO2 films were deposited on SiO2 precoated glass-slides by sol-gel method using PEG1000 as template. The strongest XRD diffraction peak at 2θ = 25.3° is attributed to [101] plane of anatase TiO2 in the film. The increases of calcination temperature and time lead to stronger diffraction peak intensity. High transmittance and blue shift of light absorption edge are the properties of the film prepared at high calcination temperature. The average pore size of the films increases with the increasing calcination temperature as the result of TiO2 crystalline particles growing up and aggregation, accompanied with higher specific surface area. Photocatalytic activity of porous TiO2 films increases with the increasing calcination temperature. The light absorption edge of the films slightly moves to longer wavelength region along with the increasing calcination time. The mesoporous film calcinated at 500 °C for 2 h has the highest transmittance, the maximum surface area, and the maximum total pore volume. Consequently, the optimum degradation activity is achieved on the porous TiO2 film calcinated at 500 °C for 2 h.

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Acknowledgment

This study was supported by the National Natural Science Foundation of China (No. 41271251), and the open research fund of Key Laboratory of Wastewater Treatment Technology of Liaoning Province, Shenyang Ligong University.

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Correspondence to Wenjie Zhang.

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Zhang, W., Pei, X., Bai, J. et al. Calcination Conditions on the Properties of Porous TiO2 Film. J. of Materi Eng and Perform 23, 1049–1054 (2014). https://doi.org/10.1007/s11665-013-0833-3

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  • DOI: https://doi.org/10.1007/s11665-013-0833-3

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