Synthesis of cobalt nanoparticles in ethanol hydrazine alkaline system (EHAS) at room temperature

被引：65

作者：

Guo, F ^{[1
]}

Zheng, HG ^{[1
]}

Yang, ZP ^{[1
]}

Qian, YT ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China

来源：

MATERIALS LETTERS | 2002年 / 56卷 / 06期

关键词：

cobalt; nanoparticles; grain growth; hydrazine;

D O I：

10.1016/S0167-577X(02)00635-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hydrazine, used as reducing agent in ethanol hydrazine alkaline system,(EHAS) at room temperature, reduced cobalt salts (CoCl(2)(.)6H(2)O or CoSO(4)(.)7H(2)O) to FCC phase and HCP phase cobalt nanoparticles that were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetty (TG) and differential thermal analysis (DTA). After the nanoparticles were heated in argon at 200 degreesC for 2 h, the HCP phase cobalt nanoparticles grow more regular and larger, and the coercivity of the sample is increased from 480 to 680 Oe. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：906 / 909

页数：4

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