Morphology investigation of mechanically activated ZnO–SnO2 system |
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| Authors: | T Iveti? Z Vukovi? MV Nikoli? VB Pavlovi? JR Nikoli? D Mini? MM Risti? |
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| Affiliation: | 1. Institute of Technical Sciences of SASA, Knez Mihailova 35, 11000 Belgrade, Serbia;2. Institute of Chemistry, Technology and Metallurgy, Department of Catalysis and Chemical Engineering, Sector of Catalysis, Njegoševa 12, 11000 Belgrade, Serbia;3. Center for Multidisciplinary Studies of the University of Belgrade, Kneza Višeslava 1, 11000 Belgrade, Serbia;4. Faculty of Physics, University of Belgrade, Studentski trg 12, 11000 Belgrade, Serbia;5. Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia;6. Serbian Academy of Science and Arts, Knez Mihailova 35, 11000 Belgrade, Serbia |
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| Abstract: | Powder mixtures of zinc oxide and tin oxide in the molar ratio, ZnO:SnO2 = 2:1, were mechanically activated in a planetary ball mill in the time intervals of 0–160 min. The adsorption–desorption isotherms, specific surface area, pore volume and pore size distribution spectra of mechanically activated powder mixtures were established by N2 adsorption at 77 K. Microstructure analysis was performed using scanning electron microscopy (SEM) and digital pattern recognition (DPR) microstructure quantity analysis. The phase composition of the mixed powders was determined by X-ray analysis. Mechanochemical activation of the ZnO–SnO2 system resulted in fine grinding of the starting particles and generation of contacts between them, mass transfer at contacts zones and formation of Zn2SnO4 spinel, which was observed after 40 min of activation. |
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| Keywords: | A Milling A Powders: solid-state reaction D Spinels Microstructure analysis |
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