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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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黑龍江大學(xué),哈爾濱學(xué)院,哈爾濱學(xué)院,哈爾濱學(xué)院,哈爾濱學(xué)院,哈爾濱學(xué)院

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黑龍江省自然基金項(xiàng)目(No. QC2012C052)


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

    本文簡述了以HF水溶液為電解液，離子液體（1-丁基-3-甲基咪唑四氟硼酸鹽 [BMIM]BF4）為N源，采用陽極氧化法制備N摻雜TiO2納米管陣列。通過掃描電子顯微鏡(SEM)、X射線衍射光譜(XRD)、X射線光電子能譜（XPS）、傅里葉變換紅外光譜（FT-IR）和紫外-可見漫反射光譜（DRS）對(duì)N摻雜TiO2納米管陣列的表面形貌、晶型和氮元素的摻雜方式進(jìn)行分析。以球形氙燈為光源，亞甲基藍(lán)溶液為目標(biāo)物質(zhì)測(cè)試N摻雜TiO2納米管陣列的光催化活性。N摻雜TiO2納米管陣列對(duì)亞甲基藍(lán)溶液的降解率明顯高于未摻雜的TiO2納米管陣列。這是因?yàn)镹摻雜后產(chǎn)生雜質(zhì)能級(jí)使禁帶寬度變窄，并且N摻雜進(jìn)入TiO2晶格中形成O-Ti-N 鍵和Ti- O-N鍵，使氧空位數(shù)量增加，從而使光催化活性提高。

    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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于瀅慧,姜艷麗,田玫,楊麗娟,閆慧君,盛雙. N-doped TiO2 nanotube arrays: Synthesis by anodic oxidation in an Ionic Liquid ([BMIM]BF4) and Assessment of Photocatalytic Properties[J].稀有金屬材料與工程,2016,45(3):561~566.[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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  • 收稿日期:2015-03-20
  • 最后修改日期:2015-11-27
  • 錄用日期:2015-12-11
  • 在線發(fā)布日期: 2016-07-07
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