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Preparation of Al-TiO2 nanotubes and their photocatalytic activities

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Abstract

Al-TiO2 nanotubes having an Al/Ti molar ratio of 0.38 were prepared using a sol-gel derived electrospinning and subsequent calcination at intervals of 50 °C from 500 to 650 °C to investigate the effect of calcination temperature on the crystal structure and the photocatalytic activity of methylene blue (MB). XRD results revealed that the Al-TiO2 nanotubes were composed of anatase (45~46%) and rutile (53~55%). The Barrette-Emmett-Teller (BET) surface area and the degradation kinetic constant increased dramatically from 151 to 226 m2/g and from 2.0 × 10−2 min−1 to 6.3 × 10−2 min−1, respectively. The Al-TiO2 nanotubes calcined above 600 °C exhibited enhanced MB degradation (100%) compared to that of the TiO2 nanotubes (27%) mainly due to the larger BET area.

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Acknowledgments

This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (Grant No. 2015-057588).

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Authors and Affiliations

  1. Department of Biomedical Engineering, Daelim University, 29, Imgok-Ro, Dongan-Gu, Anyang, 13916, South Korea

    Hyeran Lee & Deuk Yong Lee

  2. Energy and Environmental Division, Korea Institute of Ceramic Engineering and Technology, Jinju, 52851, South Korea

    Myung-Hyun Lee

  3. Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, South Korea

    Bae-Yeon Kim

  4. Department of Materials Engineering, Korea Aerospace University, Goyang, 10540, South Korea

    Yo-Seung Song

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  1. Hyeran Lee
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  2. Deuk Yong Lee
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  3. Myung-Hyun Lee
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Correspondence to Deuk Yong Lee.

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Lee, H., Lee, D.Y., Lee, MH. et al. Preparation of Al-TiO2 nanotubes and their photocatalytic activities. J Electroceram 42, 124–128 (2019). https://doi.org/10.1007/s10832-018-0159-5

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  • DOI: https://doi.org/10.1007/s10832-018-0159-5

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