Solid-state synthesis of LaCoO3 perovskite nanocrystals

被引：27

作者：

Li, F

Yu, XH

Chen, LY

Pan, HJ

Xin, XQ ^{[1
]}

机构：

[1] Nanjing Univ, Dept Chem, Nanjing 210093, Peoples R China

[2] Nanjing Univ, State Key Lab Coordinat Chem, Nanjing 210093, Peoples R China

[3] Zhengzhou Light Ind Inst, Dept Chem Engn, Zhengzhou 450002, Peoples R China

[4] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2002年 / 85卷 / 09期

关键词：

D O I：

10.1111/j.1151-2916.2002.tb00431.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A solid-state reaction process has been developed to synthesize perovskite-type LaCoO3 nanocrystals with grain diameters of 15-40 nm. In the first step of the preparation, similar to5 nm composite hydroxide nanoparticles are synthesized by the solid-state reaction of La(NO3)(3).nH(2)O and Co(NO3)(2).6H(2)O with KOH at ambient temperature. A perovskite-type rhombohedral LaCoO3 phase appears at 550degreesC, after the hydroxide has been calcined at various temperatures. The phase transformation process is complete at similar to800degreesC, yielding a single-phase binary oxide. The results indicate that the new process is convenient, inexpensive, and effective for obtaining LaCoO3 nanocrystals with high yield.

引用

页码：2177 / 2180

页数：4