Polytypic transformations during the thermal decomposition of cobalt hydroxide and cobalt hydroxynitrate

被引:19
|
作者
Ramesh, Thimmasandra Narayan [1 ]
机构
[1] Bangalore Univ, Dept Chem, Cent Coll, Bangalore 560001, Karnataka, India
关键词
Cobalt hydroxide; Cobalt oxyhydroxide; Polytype; Thermal decomposition; DIFFaX simulation; Powder X-ray diffraction; OXIDATION MECHANISM; OXIDE HYDROXIDE; NANOPLATELETS; PRECIPITATION;
D O I
10.1016/j.jssc.2010.04.030
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The isothermal decomposition of cobalt hydroxide and cobalt hydroxynitrate at different intervals of temperature leads to the formation of Co3O4. The phase evolution during the decomposition process was monitored using powder X-ray diffraction. The transformation of cobalt hydroxide to cobalt oxide occurs via three phase mixture while cobalt hydroxynitrate to cobalt oxide occurs through a two phase mixture. The nature of the sample and its preparation method controls the decomposition mechanism. The comparison of topotactical relationship between the precursors to the decomposed product has been reported in relation to polytypism. (C) 2010 Elsevier Inc. All rights reserved
引用
收藏
页码:1433 / 1436
页数:4
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