Influence of the Mixing Ways of Reactants on ZnO Morphology
Keyword(s):
ZnO particles with various morphologies were synthesized by mixing ZnSO4and NaOH solutions at 25°C followed by aging of the suspensions at 40–80°C for 2.0 h, keeping the initial molar ratio of Zn2+to OH−at 1 : 4. ZnO irregular plates were prepared by adding NaOH to ZnSO4whileε-Zn(OH)2rhombic particles were produced using the opposite mixing way. After aging of the slurries at 80°C for 2.0 h, the ZnO plates were kept stable while theε-Zn(OH)2rhombic particles were converted to ZnO whiskers with a length of 1.0–4.0 μm and a diameter of 0.03–0.3 μm. Thermodynamic analysis indicated that the formation of the Zn-bearing precipitates (ZnO orε-Zn(OH)2) at room temperature was connected closely with the solution composition.
2015 ◽
Vol 71
(11)
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pp. 1384-1387
Keyword(s):
2018 ◽
Vol 73
(9)
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pp. 641-645
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2011 ◽
Vol 396-398
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pp. 1283-1286
2005 ◽
Vol 19
(30)
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pp. 4467-4473
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Keyword(s):
2014 ◽
Vol 633
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pp. 183-188
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