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首页> 外文期刊>Applied Surface Science >Ag@AgCl plasmon-induced sensitized ZnO particle for high-efficiency photocatalytic property under visible light
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Ag@AgCl plasmon-induced sensitized ZnO particle for high-efficiency photocatalytic property under visible light

机译：Ag @ AgCl等离子体激元诱导的ZnO敏化粒子在可见光下的高效光催化性能

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摘要

Metal-semiconductor compounds, such as Ag@AgX (X=C1, Br, I), enable visible light absorption and separation of photogenerated electron-hole through surface plasmon resonance (SPR) effect. However, the electron-hole generated and separated by light are vulnerable in Ag@AgX phase because of the occurrence of secondary recombined. In order to more effectively utilize the SPR photocatalytic effect, a heterojunction interface electric field was implemented effectively by introducing some cost-effective semiconductor materials with wide band gap to Ag@AgX compound, thereby preventing photogenerated electrons from secondarily compounding with the holes. In this article, by mixing 500 nm diameter ZnO and Ag@AgX compounds with mole ratio 1:1, studies show that 15min illumination under visible light can complete degradation of rhodamine B (RhB), and indicate a high stability of photocatalytic degradation. Through Mott-Schottky plots and photoinduced I-t curve, the results show that through the ZnO/Ag@AgCl composition, heterojunction interface electric field can be formed effectively, thus increasing the separation efficiency and transfer speed of photogenerated electrons and holes, and improving the photocatalytic performance. Meanwhile, Ag@AgCl can implement the photosensitization of ZnO with high efficiency through SPR effect, which will enlarge the response range of photocatalyst to the visible area.
机译：金属半导体化合物，例如Ag @ AgX（X = C1，Br，I），可通过表面等离子体激元共振（SPR）效应吸收可见光并分离光生电子空穴。但是，由于发生二次复合，在Ag @ AgX相中易受光产生和分离的电子空穴。为了更有效地利用SPR的光催化作用，通过向Ag @ AgX化合物中引入一些具有带隙的高性价比半导体材料，从而有效地实现了异质结界面电场，从而防止了光生电子继而与空穴复合。在本文中，通过将摩尔比为1：1的500 nm直径的ZnO和Ag @ AgX化合物混合，研究表明，在可见光下照射15分钟可以完全完成罗丹明B（RhB）的降解，并显示出高的光催化降解稳定性。通过Mott-Schottky图和光致It曲线，结果表明，通过ZnO / Ag @ AgCl组成，可以有效地形成异质结界面电场，从而提高了光生电子和空穴的分离效率和传输速度，改善了光催化性能。性能。同时，Ag @ AgCl通过SPR效应可以高效地实现ZnO的光敏化，从而扩大了光催化剂对可见光区域的响应范围。

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  • 来源
    《Applied Surface Science》 |2013年第ptab期|490-497|共8页
  • 作者

    Weibing Li; Fangxia Hua; Jiguang Yue; Jiwei Li;

  • 作者单位

    School of Environment and Safety Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, China;

    School of Environment and Safety Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, China;

    School of Environment and Safety Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, China;

    School of Environment and Safety Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ZnO; Ag@AgCl; Surface plasmon resonance; Photocatalytic; Visible light;

    机译：氧化锌;Ag @ AgCl;表面等离子体共振;光催化;可见光;

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