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篇目详细内容 |
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【篇名】 |
Preparation and characterization of hexagonal close-packed Ni nanoparticles |
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【刊名】 |
Frontiers of Chemistry in China |
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【刊名缩写】 |
Front. Chem. China |
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【ISSN】 |
1673-3495 |
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【EISSN】 |
1673-3614 |
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【DOI】 |
10.1007/s11458-008-0030-3 |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2008 |
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【卷期】 |
3
卷2期 |
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【页码】 |
157-160
页,共
4
页 |
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【作者】 |
GONG Jie;
LIU Yang;
WANG Lili;
YANG Jinghai;
ZONG Zhanguo;
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【关键词】 |
sol-gel; Ni nanoparticles; hexagonal close packed (hcp); phase transformation |
【摘要】 |
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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°C. 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. |
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