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Photocatalytic activity of ZnO nanoparticles prepared via submerged arc discharge method

Ashkarran, A. A ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.1007/s00339-010-5707-z
  3. Publisher: 2010
  4. Abstract:
  5. ZnO nanostructures were synthesized through arc discharge of zinc electrodes in deionized (DI) water. X-ray diffraction (XRD) analysis of the prepared nanostructures indicates formation of crystalline ZnO of hexagonal lattice structures. Transmission electron microscopy (TEM) images illustrate rod-like as well as semi spherical ZnO nanoparticles with 15-20 nm diameter range, which were formed during the discharge process with 5 A arc current. The average particle size was found to increase with the increasing arc current. X-ray photoelectron spectroscopy (XPS) analysis confirms formation of ZnO at the surface of the nanoparticles. Surface area of the sample prepared at 5 A arc current, measured by BET analysis, was 34 m2/g. Photodegradation of Rhodamine B (Rh. B) shows that the prepared samples at lower currents have a higher photocatalytic activity due to larger surface area and smaller particle size
  6. Keywords:
  7. Arc current ; Arc discharge ; Average particle size ; BET analysis ; Discharge process ; Hexagonal lattice ; Photocatalytic activities ; Rhodamine B ; Spherical ZnO ; Submerged arc ; Surface area ; TEM ; Zinc electrodes ; ZnO ; ZnO nanoparticles ; ZnO nanostructures ; Deionized water ; Electrodes ; Nanoparticles ; Photodegradation ; Rhodium ; Transmission electron microscopy ; X ray diffraction ; X ray photoelectron spectroscopy ; Zinc ; Zinc oxide ; X ray diffraction analysis
  8. Source: Applied Physics A: Materials Science and Processing ; Volume 100, Issue 4 , September , 2010 , Pages 1097-1102 ; 09478396 (ISSN)
  9. URL: http://link.springer.com/article/10.1007%2Fs00339-010-5707-z