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Oxidative degradation of benzoic acid using spray deposited WO3/TiO2 thin films

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Abstract

Layered WO3/TiO2 thin films have been deposited onto glass and FTO coated glass substrates using spray pyrolysis method. The structural, morphological, compositional and photocatalytic properties of layered WO3/TiO2 thin films are studied. The photoelectrochemical (PEC) study shows that, both short circuit current (Isc) and open circuit voltage (Voc) are (Isc = 0.575 mA and Voc = 0.485 V) relatively high at 15 ml spraying quantity of TiO2 solution on pre-deposited WO3. SEM images show that the substrate surface is well covered with a uniform and round shaped TiO2 nanoparticles. The AFM images show the rough nature of the film. The specific surface area of the layered WO3/TiO2 thin film is found to be 62.14 m2 g−1. Photoelectrocatalytic degradation of benzoic acid (BA) in aqueous solutions is studied. The end result shows that the degradation percentage of BA using layered WO3/TiO2 photoelectrode has reached 46.56% under sunlight illumination after 320 min. The amount of degradation is confirmed by COD analysis.

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Authors and Affiliations

  1. Department of Physics, Walchand Institute of Technology, Solapur, Maharashtra, India

    Y. M. Hunge

  2. Division of Biotechnology, Chonbuk National University, Iksan, 570-752, South Korea

    M. A. Mahadik

  3. School of Chemical Engineering, Yeungnam University, Gyeongbuk, South Korea

    R. N. Bulakhe & J. J. Shim

  4. Karmaveer Bhaurao Patil College, Vashi, Navi Mumbai, Maharashtra, India

    S. P. Yadav

  5. Electrochemical Materials Laboratory, Department of Physics, Shivaji University, Kolhapur, Maharashtra, India

    A. V. Moholkar & C. H. Bhosale

Authors
  1. Y. M. Hunge
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  2. M. A. Mahadik
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  3. R. N. Bulakhe
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  4. S. P. Yadav
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  5. J. J. Shim
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  6. A. V. Moholkar
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  7. C. H. Bhosale
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Correspondence to Y. M. Hunge.

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Hunge, Y.M., Mahadik, M.A., Bulakhe, R.N. et al. Oxidative degradation of benzoic acid using spray deposited WO3/TiO2 thin films. J Mater Sci: Mater Electron 28, 17976–17984 (2017). https://doi.org/10.1007/s10854-017-7740-6

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  • DOI: https://doi.org/10.1007/s10854-017-7740-6

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