Effect Of Alkali Metal Hydroxide On Formation Processes Of Zinc Oxide Crystallites From Aqueous Solutions Containing Zn(Oh)42− Ions

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Đang xem: Effect of alkali metal hydroxide on formation processes of zinc oxide crystallites from aqueous solutions containing zn(oh)42− ions

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Effect of alkali metal hydroxide on formation processes of zinc oxide crystallites from aqueous solutions containing Zn(OH)42− ions

* Corresponding authors

a Department of Materials Technology, Faculty of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba-shi, Japan E-mail: uekawa

b Center for Frontier Electronics and Photonics, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi, Japan

Aqueous solutions containing Zn(OH)42− ions were prepared by adding 50 ml of 1.5 mol l−1 aqueous alkali metal hydroxide (MOH: M = Li, Na, K, Cs) to 50 ml of 0.1 mol l−1 aqueous zinc nitrate hydrate (Zn(NO3)2·6H2O). Zinc oxide (ZnO) crystallites were obtained by heating aqueous solutions containing Zn(OH)42− ions at ≥348 or 368 K for 3 h. The morphology depended on both of the heating temperature of the Zn(OH)42− aqueous solution and the alkali metal hydroxide used to obtain Zn(OH)42− ions. According to the result of the kinetics of the zinc oxide formation, it was shown that the decomposition of Zn(OH)42− ions on the zinc oxide surface was the rate determining step when NaOH, KOH and CsOH were used to obtain Zn(OH)42− ions. When LiOH was used to obtain Zn(OH)42− ions, the rate determining step was the nucleation of zinc oxide and/or the adsorption of Zn(OH)42− ions.

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Article information

https://doi.org/10.1039/B310306D
Submitted 27 Aug 2003
Accepted 19 Nov 2003
First published 16 Dec 2003
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Phys. Chem. Chem. Phys.

Xem thêm: Công Thức Tính Biến Áp Xung Cơ Bản, Cơ Bản Tính Toán Biến Áp Xung

, 2004,6, 442-446
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Effect of alkali metal hydroxide on formation processes of zinc oxide crystallites from aqueous solutions containing Zn(OH)42− ions

N. Uekawa, R. Yamashita, Y. Jun Wu and K. Kakegawa, Phys. Chem. Chem. Phys., 2004,6, 442 DOI: 10.1039/B310306D

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Naofumi Uekawa
Ryo Yamashita
Yong Jun Wu
Kazuyuki Kakegawa

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