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The evolution of morphology of ordered porous TiO2 films fabricated from sol-gel method assisted ZnO nanorod template

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Abstract

Ordered porous TiO2 films, including TiO2 nanotube arrays, are fabricated by a sol-gel dip-coating approach via ZnO nanorod templates obtained from aqueous solution approach. The results indicate that the morphologies of ordered porous TiO2 films have been great affected by the sol-gel dip-coating cycle number. Open-ended TiO2 nanotube arrays can be obtained in optimum dip-coating cycle numbers. The TiO2 nanotubes with the inner diameter matching well with the diameters of ZnO nanorods, are well assembled and separate each other. When the cycle number is less than this optimum value, no intact porous TiO2 film can be obtained. As the cycle number is larger than this optimum value, an ordered porous TiO2 film with many throughout holes is formed. The evolutive mechanism of ordered porous TiO2 films is proposed.

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Acknowledgements

This project was financially supported by National Natural Science Foundation of China (NSFC No. 50302013 and 50502038), the National Natural Science Foundation of Shanghai (No. 05ZR14132), and Shanghai-Applied Materials Research and Development Fund (06SA07).

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Authors and Affiliations

  1. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, No.1295, Dingxi Road, Shanghai, 200050, PR China

    Jijun Qiu, Weidong Yu, Xiangdong Gao & Xiaomin Li

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  1. Jijun Qiu
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  2. Weidong Yu
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  3. Xiangdong Gao
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  4. Xiaomin Li
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Correspondence to Jijun Qiu.

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Qiu, J., Yu, W., Gao, X. et al. The evolution of morphology of ordered porous TiO2 films fabricated from sol-gel method assisted ZnO nanorod template. J Sol-Gel Sci Technol 44, 235–239 (2007). https://doi.org/10.1007/s10971-007-1613-z

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  • DOI: https://doi.org/10.1007/s10971-007-1613-z

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