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ZnO nanoparticles prepared by electrical arc discharge method in water

机译：水中电弧放电制备ZnO纳米粒子

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摘要

We produced ZnO nanoparticles by high current electrical arc discharge of zinc electrodes in deionized (DI) water. X-ray diffraction (XRD) analysis shows formation of crystalline ZnO phase with hexagonal structure and 14nm single crystalline domain size. Dynamic light scattering (DLS) result indicates that at 5 A arc current, the size of the particles is about 100 nm and increases by increasing the arc current. Absorption spectroscopy of the samples obtained at different arc currents shows an absorption edge on 370 nm which has a red shift by increasing the arc current. Band gap of the produced ZnO nanoparticles at 5 A arc current corresponds to 3.8 eV which decreases to 3.3 eV by increasing the arc current up to 15 A. The photoluminescence (PL) spectrum of the sample showed a strong ultraviolet (UV) emission peak around 383 nm, corresponding to the ZnO nanopartictes.
机译：我们通过在去离子（DI）水中锌电极的大电流电弧放电生产了ZnO纳米颗粒。 X射线衍射（XRD）分析显示形成具有六边形结构和14nm单晶畴尺寸的ZnO相。动态光散射（DLS）结果表明，在5 A电弧电流下，颗粒尺寸约为100 nm，并且随着电弧电流的增加而增加。在不同电弧电流下获得的样品的吸收光谱显示在370 nm处的吸收边缘，该边缘通过增加电弧电流而发生红移。产生的ZnO纳米粒子在5 A电弧电流下的带隙对应于3.8 eV，通过将电弧电流增加到15 A降低到3.3 eV。样品的光致发光（PL）光谱显示在附近有很强的紫外线（UV）发射峰383 nm，对应于ZnO纳米颗粒。

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  • 来源
    《Materials Chemistry and Physics.》 |2009年第1期|6-8|共3页
  • 作者

    Ali Akbar Ashkarran; Azam Iraji zad; Seyed Mohammad Mahdavi; Mohammad Mahdi Ahadian;

  • 作者单位

    Institute for Nanoscience and Nanotechnology (INST), Sharif University of Technology, Azadi Ave., P.O. Box 11155-8639, Tehran, Iran;

    Institute for Nanoscience and Nanotechnology (INST), Sharif University of Technology, Azadi Ave., P.O. Box 11155-8639, Tehran, Iran Physics Department, Sharif University of Technology, Azadi Ave., P.O. Box 11155-8639, Tehran, Iran;

    Institute for Nanoscience and Nanotechnology (INST), Sharif University of Technology, Azadi Ave., P.O. Box 11155-8639, Tehran, Iran Physics Department, Sharif University of Technology, Azadi Ave., P.O. Box 11155-8639, Tehran, Iran;

    Institute for Nanoscience and Nanotechnology (INST), Sharif University of Technology, Azadi Ave., P.O. Box 11155-8639, Tehran, Iran;

  • 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

    ZnO nanoparticles; arc discharge; XRD; optical properties;

    机译：ZnO纳米颗粒;电弧放电XRD;光学性质;

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