Synthesis of Fe-doped TiO2 nanotubes by hydrothermal method for photodegradation of methylene blue from aqueous solutions

Authors

  • Nguyen Van Hung Dong Thap University, 783 Pham Huu Lau, Cao Lanh city, Dong Thap Author
  • Tran Thi Yen Nhi Dong Thap University, 783 Pham Huu Lau, Cao Lanh city, Dong Thap Author
  • Nguyen Huu Nghi Dong Thap University, 783 Pham Huu Lau, Cao Lanh city, Dong Thap Author
  • Bui Thi Minh Nguyet Dong Thap University, 783 Pham Huu Lau, Cao Lanh city, Dong Thap Author

DOI:

https://doi.org/10.51316/jca.2022.005

Keywords:

Fe doping, TiO2 nanotubes, hydrothermal synthesis, methylene blue, photodegradation

Abstract

Fe-doped TiO2 nanotubes were prepared by hydrothermal method using ferric nitrate and commercial TiO2 powder. The obtained materials were characterized by means of XRD, TEM, BET, FT-IR and UV-Vis-DRS. The photocatalytic activity was evaluated based on photodegradation of methylene blue under visible light irradiation. The results show that Fe3+ ions might incorporate into the lattice of TiO2 nanotubes. Fe-doped TiO2 materials showed narrower band gap energies, higher specific surface areas, more hydroxyl groups on the surface and significantly improved photocatalytic activity. The optimum Fe doping at the molar ratios of Fe/Ti = 0.5% showed the highest photocatalytic activity and was 3.08 times higher than that of undoped TiO2. The kinetic studies showed the decomposition of MB followed pseudo first-order kinetics with the rate constant were determined kapp = 5.64×10-2 min−1.

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Published

30-04-2022

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How to Cite

Synthesis of Fe-doped TiO2 nanotubes by hydrothermal method for photodegradation of methylene blue from aqueous solutions. (2022). Vietnam Journal of Catalysis and Adsorption, 11(1), 29-36. https://doi.org/10.51316/jca.2022.005

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