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首页> 外文期刊>Materials Chemistry and Physics >X-ray photoelectron spectroscopic studies of anodically synthesized self aligned TiO_2 nanotube arrays and the effect of electrochemical parameters on tube morphology
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X-ray photoelectron spectroscopic studies of anodically synthesized self aligned TiO_2 nanotube arrays and the effect of electrochemical parameters on tube morphology

机译：阳极合成的自对准TiO_2纳米管阵列的X射线光电子能谱研究及电化学参数对管形的影响

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摘要

Self aligned TiO_2 nanotube arrays, compared to other TiO_2 nanostructures, have better electron transport properties that will enhance the efficiency of photo catalysis, hydrogen generation by photo-electrolysis and dye sensitized solar cells. Optimization of process parameters by tuning of electrochemical parameters allows the synthesis of TiO_2 nanotube arrays of desired aspect ratio, wall thickness and morphology. In this study TiO_2 nanotube arrays were synthesized at various electrochemical parameters and characterized using field emission scanning electron microscopy (FESEM), Fourier transform infra-red (FTIR) and X-ray photoelectron spectroscopy (XPS). From the results of the study optimum potential range, electrolyte compositions and duration of anodization for the fabrication of smooth walled nanotube arrays of desired aspect ratio are delineated. Presence of surface hydroxyl groups and non-stochiometry in the as prepared and annealed TiO_2 nanotubes were found from FTIR and XPS studies respectively, thus providing rationalization for the enhanced photo catalytic activity of TiO_2 nanotube arrays.
机译：与其他TiO_2纳米结构相比，自对准TiO_2纳米管阵列具有更好的电子传输性能，这将提高光催化，通过光电解产生氢和染料敏化太阳能电池的效率。通过调节电化学参数来优化工艺参数可以合成所需纵横比，壁厚和形态的TiO_2纳米管阵列。在这项研究中，在各种电化学参数下合成了TiO_2纳米管阵列，并使用场发射扫描电子显微镜（FESEM），傅立叶变换红外（FTIR）和X射线光电子能谱（XPS）对其进行了表征。根据研究的最佳电位范围的结果，描绘了用于制造具有所需纵横比的光滑壁纳米管阵列的电解质组成和阳极氧化持续时间。分别通过FTIR和XPS研究发现了制备的和退火后的TiO_2纳米管中存在表面羟基和非化学计量，从而为增强TiO_2纳米管阵列的光催化活性提供了合理的依据。

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  • 来源
    《Materials Chemistry and Physics》 |2012年第3期|957-966|共10页
  • 作者

    Rajini P. Antony; Tom Mathews; Sitaram Dash; Ashok K. Tyagi; Baldev Raj;

  • 作者单位

    Thin Films and Coatings Section, Surface and Nanoscience Division, Materials Science Croup, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, TN, India;

    Thin Films and Coatings Section, Surface and Nanoscience Division, Materials Science Croup, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, TN, India;

    Thin Films and Coatings Section, Surface and Nanoscience Division, Materials Science Croup, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, TN, India;

    Thin Films and Coatings Section, Surface and Nanoscience Division, Materials Science Croup, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, TN, India;

    Thin Films and Coatings Section, Surface and Nanoscience Division, Materials Science Croup, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, TN, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    thin films; nanostructures; electrochemical techniques; X-ray photo-electron spectroscopy (XPS);

    机译：薄膜;纳米结构电化学技术;X射线光电子能谱（XPS）;

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