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N-doped TiO2 nanotube arrays: Synthesis by anodic oxidation in an Ionic Liquid ([BMIM]BF4) and Assessment of Photocatalytic Properties
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    Abstract:

    N-doped TiO2 nanotube (NT) arrays were prepared by anodization in electrolytes containing HF, 1-n-butyl-3-methyl-imidazolium tetrafluoroborate ([BMIM]BF4) ionic liquid and water. The ionic liquid, [BMIM]BF4, was used as the nitrogen source. The surface morphology and composition of samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR) and UV-Vis diffuse reflectance spectra (DRS). Photocatalytic activity of N-doped TiO2 NT arrays was investigated by degradation of methylene blue (MB) under spherical xenon lamp. The degradation rate of MB over N-doped TiO2 NT arrays was obviously higher than that over undoped TiO2 NT arrays. The results are caused by the increased oxygen vacancies and the decreased band gap.

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[Yinghui Yu, Yanli Jiang, Mei Tian, Lijuan Yang, Huijun Yan, Shuang Sheng. N-doped TiO2 nanotube arrays: Synthesis by anodic oxidation in an Ionic Liquid ([BMIM]BF4) and Assessment of Photocatalytic Properties[J]. Rare Metal Materials and Engineering,2016,45(3):561~566.]
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History
  • Received:March 20,2015
  • Revised:November 27,2015
  • Adopted:December 11,2015
  • Online: July 07,2016
  • Published: