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首页> 外文期刊>Environmental Science & Technology >Improved Photocatalytic Degradation of Textile Dye Using Titanium Dioxide Nanotubes Foimed Over Titanium Wires
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Improved Photocatalytic Degradation of Textile Dye Using Titanium Dioxide Nanotubes Foimed Over Titanium Wires

机译:包覆在钛丝上的二氧化钛纳米管改善了织物染料的光催化降解

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摘要

Titanium dioxide (TiO_2) nanotubes formed by anodization over titanium wires show a significant improvement in photocatalytic activity compared to the nanotubes formed over foils. This is evident when the fractional conversion of a textile dye, methyl orange, increased from 19% over a foil to 40% over wires in the presence of nanotubes of identical dimensions illuminated over the same geometrical area. Higher degradation rates with Pt-TiO_2 nanotubes over foils are matched by the Pt-free TiO_2 nanotubes over the wires. The higher photocatalytic activity over the anodized wires can be attributed to the efficient capture of reflected and refracted light by the radially outward oriented TiO_2 nanotubes formed over the circumference of the titanium wire. The formation of TiO_2 nanotubes over wires can be considered as an effective alternate to improve photodegradation rates by avoiding expensive additives.
机译:与在箔上形成的纳米管相比,通过在钛丝上进行阳极氧化形成的二氧化钛(TiO_2)纳米管显示出光催化活性的显着改善。当在相同的几何区域上照射相同尺寸的纳米管时,纺织染料甲基橙的分数转化率从箔上的19%增加到金属丝上的40%,这是显而易见的。箔上的Pt-TiO_2纳米管具有较高的降解率,而导线上的无Pt TiO_2纳米管则具有较高的降解率。在阳极氧化线上的较高的光催化活性可以归因于在钛线的圆周上形成的径向向外取向的TiO_2纳米管的有效捕获反射光和折射光。通过避免昂贵的添加剂,可以认为在导线上形成TiO_2纳米管是提高光降解速率的有效替代方法。

著录项

  • 来源
    《Environmental Science & Technology》 |2009年第9期|3260-3265|共6页
  • 作者单位

    Departments of Electrical and Biomedical Engineering University of Nevada, Reno, Nevada 89557;

    Chemical and Metallurgical Engineering, University of Nevada, Reno, Nevada 89557;

    Chemical and Metallurgical Engineering, University of Nevada, Reno, Nevada 89557;

  • 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);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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