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Effects of heat treatment on the microstructure and properties of TiO2 based film by plasma electrolytic oxidation

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Abstract

Porous films with binary phase of TiO2 containing Fe2O3 were fabricated by plasma electrolytic oxidation (PEO) coupled with post heat treatment. Effects of heat treatment temperature on microstructure and photocatalytic activities of the films were investigated. The results revealed that the PEO film without heat treatment consisted of anatase TiO2 (A-TiO2) and Al2TiO5, apart from the corresponding elements in the crystal, Fe and P were also found in the film. Film subjected to heat treatment at a lower temperature of 600 °C was composed of A-TiO2 and Fe2O3 and some Al2O3, and film treated at 800 °C contained additional Rutile TiO2 (R-TiO2). After heat treatment, the film surface became unique and homogeneous with smaller roughness. After heat treatment, films showed stronger absorption towards visible zone and sample treated at 800 °C showed further stronger absorption. With increasing treating temperature, the film exhibited higher photocatalytic activity. Film treated at 800 °C exhibited a degradation rate of 88%, which also showed stable recycle photocatalytic activity.

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Acknowledgements

This work was supported by Jiangsu government scholarship for oversea studies (JS-2014-242) and Jiangsu University scholarship for oversea studies, the National Natural Science Foundation of China (51505197), the Natural Science Foundation of Jiangsu Province (BK20130509) and the college students innovation foundation of Jiang Su university technology center (ZXJG201628, ZXJG201629 and ZXJG201630).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China

    Yunlong Wang, Shuhang Ye, Fei Chen, Shujing Shi, Miao Wang, Qiang Zhu, Jiajia Hu & Yonggang Wang

  2. Institute for Advance Materials, Jiangsu University, Zhenjiang, 212013, China

    Yunlong Wang & Miao Wang

  3. Center for Photon Manufacturing Science and Technology, Zhenjiang, 212013, China

    Linzhong Zhu & Miao Wang

  4. National Model Centre of Experiment Teaching-Engineering Training Center, Zhenjiang, 212013, China

    Jianhua Ge

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  1. Yunlong Wang
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  2. Shuhang Ye
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  4. Fei Chen
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  5. Shujing Shi
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  8. Qiang Zhu
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  9. Jiajia Hu
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  10. Yonggang Wang
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Correspondence to Yunlong Wang or Miao Wang.

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Wang, Y., Ye, S., Zhu, L. et al. Effects of heat treatment on the microstructure and properties of TiO2 based film by plasma electrolytic oxidation. Monatsh Chem 148, 1185–1190 (2017). https://doi.org/10.1007/s00706-017-1941-9

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  • DOI: https://doi.org/10.1007/s00706-017-1941-9

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