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Photocatalytic degradation of benzene, toluene, ethylbenzene, and xylene (BTEX) using transition metal-doped titanium dioxide immobilized on fiberglass cloth

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Abstract

Transition metal (Fe, V and W)-doped TiO2 was synthesized via the solvothermal technique and immobilized onto fiberglass cloth (FGC) for uses in photocatalytic decomposition of gaseous volatile organic compounds—benzene, toluene, ethylbenzene and xylene (BTEX)—under visible light. Results were compared to that of the standard commercial pure TiO2 (P25) coated FGC. All doped samples exhibit higher visible light catalytic activity than the pure TiO2. The V-doped sample shows the highest photocatalytic activity followed by the W- and Fe-doped samples. The UV-Vis diffuse reflectance spectra reveal that the V-doped sample has the highest visible light absorption followed by the W- and Fe-doped samples. The X-ray diffraction (XRD) patterns indicate that all doped samples contain both anatase and rutile phases with the majority (>80%) being anatase. No new peaks associated with dopant oxides can be observed, suggesting that the transition metal (TM) dopants are well mixed into the TiO2 lattice, or are below the detection limit of the XRD. The X-ray absorption near-edge structure spectra of the Ti K-edge transition indicate that most Ti ions are in a tetravalent state with octahedral coordination, but with increased lattice distortion from Fe- to V- and W-doped samples. Our results show that the TM-doped TiO2 were successfully synthesized and immobilized onto flexible fiberglass cloth suitable for treatment of gaseous organic pollutants under visible light.

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Authors and Affiliations

  1. International Postgraduate Programs in Environmental Management, Graduate School, Chulalongkorn University, Bangkok, 10330, Thailand

    Laksana Laokiat

  2. NCE for Environmental and Hazardous Waste Management, Chulalongkorn University, Bangkok, 10330, Thailand

    Laksana Laokiat

  3. National Nanotechnology Center, National Science and Technology Development Agency, Pathumthani, 12120, Thailand

    Pongtanawat Khemthong

  4. Department of Chemical Engineering, Faculty of Engineering, Thammasat University, Pathumthani, 12121, Thailand

    Nurak Grisdanurak

  5. School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University, Pathumthani, 12121, Thailand

    Paiboon Sreearunothai

  6. Synchrotron Light Research Institute, Nakhon Ratchasima, 30000, Thailand

    Wanwisa Pattanasiriwisawa & Wantana Klysubun

Authors
  1. Laksana Laokiat
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  2. Pongtanawat Khemthong
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  3. Nurak Grisdanurak
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  4. Paiboon Sreearunothai
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  5. Wanwisa Pattanasiriwisawa
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  6. Wantana Klysubun
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Corresponding author

Correspondence to Nurak Grisdanurak.

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Laokiat, L., Khemthong, P., Grisdanurak, N. et al. Photocatalytic degradation of benzene, toluene, ethylbenzene, and xylene (BTEX) using transition metal-doped titanium dioxide immobilized on fiberglass cloth. Korean J. Chem. Eng. 29, 377–383 (2012). https://doi.org/10.1007/s11814-011-0179-1

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  • DOI: https://doi.org/10.1007/s11814-011-0179-1

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