Thermal stability of nanocrystalline 3R-CuCrO2

被引：0
作者：
D. Ursu
M. Miclau
机构：
[1] National Institute for Research and Development in Electrochemistry and Condensed Matter,
[2] Timisoara,undefined
[3] Politehnica University of Timisoara,undefined
来源：
Journal of Nanoparticle Research | 2014年 / 16卷
关键词：
Nanocrystallinematerials; Hydrothermal synthesis; Thermal stability; Grain growth;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The thermal stability of nanocrystalline 3R-CuCrO2 obtaining by hydrothermal method was investigated by annealing treatment, XRD, FT-IR, XPS and TG. The three temperature domains corresponding to thermal stability of 3R-CuCrO2 nanocrystals (25–400 °C), destabilization of nanocrystalline 3R-CuCrO2 phase (400–800 °C) and recrystallization of 3R-CuCrO2 in microcrystalline state over 800 °C, were determined by the specific hydrothermal synthesis conditions. This study has indicated that nanocrystals with delafossite structure synthesized by hydrothermal method exhibit nanocrystalline state up to a reasonably high temperature, about 390 °C, which could be interesting for technical applications and the classical theory of the grain growth.
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