期刊
NANOSCALE RESEARCH LETTERS
卷 4, 期 6, 页码 550-557出版社
SPRINGEROPEN
DOI: 10.1007/s11671-009-9279-9
关键词
Ni(OH)(2); NiO; Hollow architecture; Hydrothermal synthesis
资金
- National Natural Science Foundation of China [50573090, 10672161]
- Beijing Municipal Natural Science Foundation [2082023]
Three-dimensional (3D) flower-like hierarchical beta-Ni(OH)(2) hollow architectures were synthesized by a facile hydrothermal route. The as-obtained products were well characterized by XRD, SEM, TEM (HRTEM), SAED, and DSC-TGA. It was shown that the 3D flower-like hierarchical beta-Ni(OH)(2) hollow architectures with a diameter of several micrometers are assembled from nanosheets with a thickness of 10-20 nm and a width of 0.5-2.5 mu m. A rational mechanism of formation was proposed on the basis of a range of contrasting experiments. 3D flower-like hierarchical NiO hollow architectures with porous structure were obtained after thermal decomposition at appropriate temperatures. UV-Vis spectra reveal that the band gap of the as-synthesized NiO samples was about 3.57 eV, exhibiting obviously red shift compared with the bulk counterpart.
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