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Structural investigation of mechanically activated ZnO powder

Authorized Users Only
2015
Authors
Peleš, Adriana
Pavlović, Vera P.
Filipović, Suzana
Obradovic, Nina
Mančić, Lidija
Krstić, Jugoslav
Mitrić, Miodrag
Vlahovic, B
Rasic, G
Kosanovic, D
Pavlović, Vladimir B.
Article (Published version)
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Abstract
Commercially available ZnO powder was mechanically activated in a planetary ball mill. In order to investigate the specific surface area, pore volume and microstructure of non-activated and mechanically activated ZnO powders the authors performed N-2 physisorption, SEM and TEM. Crystallite size and lattice microstrain were analyzed by X-ray diffraction method. XRD patterns indicate that peak intensities are getting lower and expend with activation time. The reduction in crystallite size and increasing of lattice microstrain with prolonged milling time were determined applying the Rietveld's method. The difference between non-activated and the activated powder has been also observed by X-ray photoelectron spectroscopy (XPS). XPS is used for investigating the chemical bonding of ZnO powder by analyzing the energy of photoelectrons. The lattice vibration spectra were obtained using Raman spectroscopy. In Raman spectra some changes along with atypical resonant scattering were noticed, whic...h were caused by mechanical activation.

Keywords:
mechanical activation / N-2 physisorption / XRD / XPS / SEM / TEM / Raman spectroscopy / ZnO
Source:
Journal of Alloys and Compounds, 2015, 648, 971-979
Publisher:
  • Elsevier
Projects:
  • Directed synthesis, structure and properties of multifunctional materials (RS-172057)
  • NSF CREST - HRD-0833184
  • NASA - NNX09AV07A
  • Serbian Academy of Science and Arts - F/198
Note:
  • Accepted version: http://cer.ihtm.bg.ac.rs/handle/123456789/3208

DOI: 10.1016/j.jallcom.2015.06.247

ISSN: 0925-8388

WoS: 000361158300139

Scopus: 2-s2.0-84937238971
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/1715
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IHTM

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