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Photocatalytic Activity of Al-TiO2 Nanomaterials for the Degradation of Methylene Blue Dye

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Abstract

Al-TiO2 nanofibers and nanotubes having an Al/Ti molar ratio of 0.38 were prepared using solgel-derived electrospinning to investigate the effect of Al doping on the crystal structure and the photocatalytic activity of methylene blue (MB). X-ray diffraction (XRD) results indicated that Al-TiO2 nanofibers and nanotubes were composed of anatase (47%, 43%) and rutile (53%, 57%) phases, respectively. As the Al-TiO2 nanotubes were electrospun whereas the Al-TiO2 nanofibers were not, the Barrette-Emmett-Teller (BET) surface area and degradation kinetic constant increased dramatically from 147 m2/g to 151 m2/g and from 7.7 × 10 −3 min −1 to 2.0 × 10 −2 min −1, respectively. The Al-TiO2 nanotubes calcined at 500 °C exhibited enhanced MB degradation (93%) compared with that of TiO2 nanofibers (8%) due to the synergic combination of mixed crystals, larger BET area, and Al doping.

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Authors and Affiliations

  1. Department of Materials Engineering, Korea Aerospace University, Goyang, 10540, Korea

    Yo-Seung Song

  2. Department of Biomedical Engineering, Daelim University, Anyang, 13916, Korea

    Yena Kim, Hyeran Lee & Deuk Yong Lee

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

    Myung-Hyun Lee

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

    Bae-Yeon Kim

Authors
  1. Yo-Seung Song
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  2. Yena Kim
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  3. Hyeran Lee
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  4. Deuk Yong Lee
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  5. Myung-Hyun Lee
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  6. Bae-Yeon Kim
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Correspondence to Deuk Yong Lee.

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Song, YS., Kim, Y., Lee, H. et al. Photocatalytic Activity of Al-TiO2 Nanomaterials for the Degradation of Methylene Blue Dye. Journal of the Korean Physical Society 72, 412–416 (2018). https://doi.org/10.3938/jkps.72.412

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  • DOI: https://doi.org/10.3938/jkps.72.412

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