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ZnO nanoparticles prepared by electrical arc discharge method in water

Ashkarran, A. A ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1016/j.matchemphys.2009.07.002
  3. Publisher: 2009
  4. Abstract:
  5. 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 14 nm 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 nanoparticles. © 2009 Elsevier B.V. All rights reserved
  6. Keywords:
  7. Absorption edges ; Arc current ; Arc discharge ; Band gaps ; Electrical arc ; Emission peaks ; Hexagonal structures ; High currents ; Photoluminescence spectrum ; Red shift ; Single-crystalline domains ; Ultra-violet ; XRD ; Zinc electrodes ; ZnO ; ZnO nanoparticles ; Absorption ; Absorption spectroscopy ; Cavity resonators ; Crystalline materials ; Deionized water ; Dynamic light scattering ; Electric arcs ; Electrodes ; Emission spectroscopy ; Light ; Optical properties ; Semiconducting zinc compounds ; X ray diffraction ; X ray diffraction analysis ; Zinc ; Zinc oxide ; Nanoparticles
  8. Source: Materials Chemistry and Physics ; Volume 118, Issue 1 , 2009 , Pages 6-8 ; 02540584 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0254058409003848