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One dimensional efficient photocatalyst based on plasmonic grating

机译：基于等离子体光栅的一维高效光催化剂

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摘要

We can summarize the benefits of the water photocatalysis by two words: clean energy and purification of pollutants, and its problems as the large energy gap and electron-hole recombination. Scientists are still looking for a semiconductor whose energy gap lies in the visible region, with electron-hole pairs of longer life time. One of the proposed solutions in this field is combining the available semiconductors (such as TiO_2) with a metal of plasmonic properties. The existing of the plasmonic metal will ensure that the visible portion of the solar region will involve in the photocatalysis action. It will be absorbed by the plasmonic metal, be transformed into a local energy that leads to excitation processes in the semiconductor. Also, the existing of the metal will guarantee a longer life time for the electron-gap pairs generated in the semiconductor, as the metal acts as a sink for the electrons generated in the semiconductor. In this paper, we created a unique photocatalyst based on one dimensional grating coated by gold thin film and covered by TiO_2 cap layer. By examining the sample with visible radiation, we obtained a rate of sabotage of 25 percent within three hours.
机译：我们可以通过两个词来总结水光催化的益处：清洁能量和污染物的纯化，以及其大能间隙和电子孔重组的问题。科学家们仍在寻找一种半导体，其能隙位于可见区域，具有更长的寿命的电子孔对。该领域中提出的一个解决方案之一是将可用半导体（例如TiO_2）与等离子体性质的金属组合。等离子体金属的现有将确保太阳能区域的可见部分将涉及光催化作用。它将被等离子体金属吸收，转化为导致半导体中的激发过程的局部能量。而且，金属的现有将保证在半导体中产生的电子间隙对的寿命更长的时间，因为金属用作半导体中产生的电子的水槽。在本文中，我们基于金薄膜涂覆的一维光栅和由TiO_2盖层覆盖的独特光催化剂。通过使用可见辐射检查样品，我们在三小时内获得25％的破坏率。

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  • 来源
    《Optical and quantum electronics》 |2021年第7期|355.1-355.8|共8页
  • 作者

    Y. Allssa; S. M. Hamidi; A. Shahnazi; M. R. Nabid;

  • 作者单位

    Magneto-Plasmonic Lab Laser and Plasma Research Institute Shahid Beheshti University Tehran Iran;

    Magneto-Plasmonic Lab Laser and Plasma Research Institute Shahid Beheshti University Tehran Iran;

    Department of Polymer Chemistry and Materials Faculty of Chemistry and Petroleum Sciences Shahid Beheshti University Evin Tehran Iran;

    Department of Polymer Chemistry and Materials Faculty of Chemistry and Petroleum Sciences Shahid Beheshti University Evin Tehran Iran;

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

    Photocatalyst; Plasmonic grating; TiO_2; Visible region;

    机译：光催化剂;等离子体光栅;tio_2;可见区域;

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