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首页> 外文期刊>Environmental Science & Technology >As(Ⅲ) Removal By Palladium-modified Nitrogen-doped Titanium Oxide Nanoparticle Photocatalyst
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As(Ⅲ) Removal By Palladium-modified Nitrogen-doped Titanium Oxide Nanoparticle Photocatalyst

机译:钯改性氮掺杂氧化钛纳米粒子光催化剂去除As(Ⅲ)

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摘要

Removal of arsenic species from water by palladium-modified nitrogen-doped titanium oxide (TiON/PdO) nanoparticles was investigated with and without visible light. For the first time, a high degree of As(lll) removal under visible light illumination was demonstrated on oxide photocatalysts. Over 2 orders of magnitude decrease of As(Ⅲ) concentration in water was observed in 1 h as the As(Ⅲ) concentration was reduced below the U.S. Environmental Protection Agency standard (10 μg/L) by TiON/ PdO photocatalyst. Such an efficient removal of As(Ⅲ) was shown to result from the combined effects of strong adsorption and photooxidation by TiON/PdO, where an enhanced photocatalytic activity under visible light illumination than nitrogen-doped titanium oxide (TiON) was derived from the strong optoelectronic coupling between PdO and TiON.
机译:研究了在有和没有可见光的情况下,钯改性的氮掺杂二氧化钛(TiON / PdO)纳米颗粒从水中去除砷的可能性。首次在氧化物光催化剂上展示了在可见光照射下的高度As(III)去除。由于TiON / PdO光催化剂将As(Ⅲ)的浓度降低到美国环境保护署标准(10μg/ L)以下,因此在1小时内,水中As(Ⅲ)的浓度降低了2个数量级以上。如此有效地去除As(Ⅲ)的原因是TiON / PdO的强吸附和光氧化作用的共同作用,其中可见光照射下比氮掺杂的二氧化钛(TiON)增强的光催化活性。 PdO和TiON之间的光电耦合。

著录项

  • 来源
    《Environmental Science & Technology》 |2009年第5期|1534-1539|共6页
  • 作者单位

    Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801;

  • 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
  • 中图分类
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