Preparation and characterization of hexagonal close-packed Ni nanoparticles |
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Authors: | Jie Gong Yang Liu Lili Wang Jinghai Yang Zhanguo Zong |
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Institution: | (1) Institute of Applied Physics, Changchun University, Changchun, 130022, China;(2) Physical College, Jilin Normal University, Siping, 136000, 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°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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Translated from Chemical Journal of Chinese Universities, 2007, 28(7): 1232–1234 译自: 高等学校化学学报] |
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Keywords: | sol-gel Ni nanoparticles hexagonal close packed (hcp) phase transformation |
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