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Photocatalytic Decomposition of Organic Contaminants by Bi2WO6 Under Visible Light Irradiation

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Abstract

An oxide photocatalyst Bi2WO6 with corner-shared WO6 octahedral layered structure was synthesized. Its band gap was determined to be 2.69 eV from UV–vis diffuse reflectance spectra. The photocatalyst showed not only the activity for photocatalytic O2 evolution with the initial evolution rate of 2.0 μmol/h but also the activity of mineralizing both CHCl3 and CH3CHO contaminants under visible light irradiation. Meanwhile, wavelength dependence of CH3CHO decomposition was observed, which indicated that the photocatalytic activity of the photocatalyst was in good agreement with its light-absorption ability.

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Authors and Affiliations

  1. Ecomaterials Center, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan. E-mail

    Junwang Tang & Jinhua Ye

  2. Ecoenergy and Ecomaterials Center (EEMC), Nanjing University, Nanjing, 210093, China

    Zhigang Zou

  3. Photoreaction Control Research Center (PCRC), National Institute of Advanced Industrial Science and Technology (AIST), Higashi, Tsukuba, Ibaraki, 305-8565, Japan

    Zhigang Zou

Authors
  1. Junwang Tang
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  2. Zhigang Zou
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  3. Jinhua Ye
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Correspondence to Junwang Tang.

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Tang, J., Zou, Z. & Ye, J. Photocatalytic Decomposition of Organic Contaminants by Bi2WO6 Under Visible Light Irradiation. Catalysis Letters 92, 53–56 (2004). https://doi.org/10.1023/B:CATL.0000011086.20412.aa

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  • DOI: https://doi.org/10.1023/B:CATL.0000011086.20412.aa

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