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Effect of co-doping and tri-doping with transition metals and a nonmetal on photocatalytic activity in visible light of TiO2 thin film

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Abstract

Mono, co- and tri-doped TiO2 thin films with the transition metals (vanadium and/or chrominium) and a nonmetal (nitrogen) have been fabricated by sol-gel method. X-ray diffraction results clearly reveal anatase crystal structure for all obtained samples and doping with any dopants doesn’t change the anatase phase of TiO2. Compared to TiO2, three types of doped TiO2 thin films exhibit a red-shift in the absorption edge and have much better photocatalytic properties for methylene blue degradation in visible light region. The maximum visible-photocatalytic performance was achieved for tri-doped TiO2 sample. The mechanism for enhancing visible-photocatalytic activity of co-doped and tri-doped TiO2 thin films was also examined.

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Authors and Affiliations

  1. Department of Physics, Tay Nguyen University, Dak Lak province, Viet Nam Department of Applied Physics, Ho Chi Minh University of Science, Ho Chi Minh city, Viet Nam

    Hang Nguyen Thai Phung

  2. Department of Applied Physics, Ho Chi Minh University of Science, Ho Chi Minh city, Viet Nam

    Van Nguyen Khanh Tran, Phuong Ai Duong & Hung Vu Tuan Le

  3. Department of Applied Physics, Ho Chi Minh City University of Transport, Ho Chi Minh city, Viet Nam

    Nguyen Duc Truong

Authors
  1. Hang Nguyen Thai Phung
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  2. Van Nguyen Khanh Tran
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  3. Phuong Ai Duong
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  4. Hung Vu Tuan Le
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  5. Nguyen Duc Truong
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Correspondence to Hang Nguyen Thai Phung.

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Phung, H.N.T., Tran, V.N.K., Duong, P.A. et al. Effect of co-doping and tri-doping with transition metals and a nonmetal on photocatalytic activity in visible light of TiO2 thin film. Journal of the Korean Physical Society 70, 995–1000 (2017). https://doi.org/10.3938/jkps.70.995

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  • DOI: https://doi.org/10.3938/jkps.70.995

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