Saeed Karimi, and Abolghasem Ataie, Characterization of mechanothermally processed nanostructured ZnO, Int. J. Miner. Metall. Mater., 23(2016), No. 5, pp.588-594. https://dx.doi.org/10.1007/s12613-016-1270-8
Cite this article as: Saeed Karimi, and Abolghasem Ataie, Characterization of mechanothermally processed nanostructured ZnO, Int. J. Miner. Metall. Mater., 23(2016), No. 5, pp.588-594. https://dx.doi.org/10.1007/s12613-016-1270-8

Characterization of mechanothermally processed nanostructured ZnO

  • In this paper, the Taguchi method with an L9(34) orthogonal array was used as experimental design to determine the optimum conditions for preparing ZnO nanoparticles via a mechanothermal route. ZnSO4·H2O and Na2CO3 were used as starting materials. The effects of milling time, Na2CO3/ZnSO4·H2O molar ratio, and ball-to-powder mass ratio (BPR) on the bandgap (Eg) of ZnO nanoparticles were investigated. The ranges of the investigated experimental conditions were 5–15 h for the milling time (t), 1.0–1.2 for the Na2CO3/ZnSO4·H2O molar ratio (M), and 10–30 for BPR. The milling time and BPR exhibited significant effects; an increase in milling time reduced the bandgap. The optimum conditions from this study were t3 = 15 h, M1 = 1, and BPR2 = 20. Only two significant factors (t3, 15 h; BPR2, 20) were used to estimate the performance at the optimum conditions. The calculated bandgap was 3.12 eV, in reasonable agreement with the experimental results obtained under the optimized conditions.
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