Hydrothermal synthesis of fine zinc oxide particles under supercritical conditions

被引：69

作者：

Ohara, S

Mousavand, T

Umetsu, M

Takami, S

Adschiri, T

Kuroki, Y

Takata, M

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Nagaoka Univ Technol, Dept Elect Engn, Nagaoka, Niigata 9402188, Japan

来源：

SOLID STATE IONICS | 2004年 / 172卷 / 1-4期

关键词：

supercritical water; hydrothermal synthesis; ZnO; particles; ultraviolet emission;

D O I：

10.1016/j.ssi.2004.02.044

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Fine ZnO particles with high crystallinity were obtained by hydrothermal synthesis under supercritical conditions. Zinc nitrate aqueous solution was pressurized to 30 MPa at room temperature and rapidly heated to 390 degreesC by mixing with supercritical water and then fed into a tubular reactor. The ZnO whiskers were prepared when the concentration of solution was below 0.02 mol/l. Room temperature photoluminescence spectrum of this whiskers showed a strong ultraviolet light emission with broad red light emission. (C) 2004 Elsevier B.V. All rights reserved.

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页码：261 / 264

页数：4

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