Preparation and characterization of hexagonal close-packed Ni nanoparticles

Jie GONG ¹Yang LIU ²Lili WANG ³Jinghai YANG ³Zhanguo ZONG²

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作者信息

1. Institute of Applied Physics,Changchun University,Changchun 130022,China;Physical College,Jilin Normal University,Siping 136000,China
2. Physical College,Jilin Normal University,Siping 136000,China
3. Institute of Applied Physics,Changchun University,Changchun 130022,China
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Abstract

Hexagonal close-packed Ni nanoparticles were synthesized using a heat-treating technique with the precursors prepared by the sol-gel method.The synthesis condition,structure,and morphology of the samples were characterized and analysed by thermogravimetric analysis (TG),differential thermal analysis (DTA),X-ray diffraction (XRD) and transmission electron microscopy (TEM).Results indicate that the hexagonal close packed Ni nanoparticles were synthesized at a heat-treating temperature of 300℃.The cell constants are calculated at a=0.2652 nm and c=0.4334 nm.The average grain size of the hexagonal close-packed Ni particles evaluated by Scherrer equation is about 12 nm.The phase transformation from a hexagonal close-packed Ni to a face-centered cubic Ni structure occurred when the heat-treating temperature was increased.

Key words

sol-gel/Ni nanoparticles/hexagonal close packed (hcp)/phase transformation

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基金项目

Technology Programming Foundation of Jilin Province(20050415)

出版年

2008

中国化学前沿

高等教育出版社

中国化学前沿

ISSN：1673-3495

参考文献量20

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