I-doped Bi2WO6 microflowers enhanced visible light photocatalytic activity for organic pollution degradation and NO removal

  • Xin Lu
  • Gangqiang ZhuEmail author
  • Rongxin Zhang
  • Shiping Li
  • Longkai Pan
  • Junli Nie
  • Fei Rao


Bi2WO6 is a widely used photocatalyst, which has a good visible light response owing to the narrow band gap. But in the process of photocatalytic reactions, the combination of electrons and holes has a significant effect on the photocatalytic activity. In this work, I-doped Bi2WO6 microflowers were prepared by a simple one-step hydrothermal method. The microflower has a large surface area, which can be conducive to the adsorption of pollutants, degrading Rhodamine B and removal of NO effectively. The structure, as well as optical properties of the I-doped Bi2WO6 microflowers have been characterized by a series of techniques such as X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscope (TEM), and UV–vis diffuse reflectance spectroscopy. According to the results of UV–vis spectra, the I-doped Bi2WO6 microflowers are found demonstrating a significantly enhanced visible light absorption. The photocurrent and photoluminescence spectra indicate an increased separation rate for the I-doped Bi2WO6 photocatalyst of the photo-generated electron–hole pairs. Under visible-light irradiation, the S3 I-doped Bi2WO6 photocatalyst shows the photocatalytic efficiency about 97.6% and 50.0% for Rhodamine B and NO, respectively.



This work was supported by the Student’s Platform for Innovation and Entrepreneurship Training Program Foundation (No. 1301070014).


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Authors and Affiliations

  1. 1.School of Physics and Information TechnologyShaanxi Normal UniversityXi’anPeople’s Republic of China
  2. 2.Science and Technology on Thermostructural Composite Materials Laboratory, School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’anPeople’s Republic of China

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