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Self-Assembled 3D Flower-Like Hierarchical β-Ni(OH)2 Hollow Architectures and their In Situ Thermal Conversion to NiO

Zhu, Lu-Ping and Liao, Gui-Hong and Yang, Yang and Xiao, Hong-Mei and Wang, Ji-Fen and Fu, Shao-Yun (2009) Self-Assembled 3D Flower-Like Hierarchical β-Ni(OH)2 Hollow Architectures and their In Situ Thermal Conversion to NiO. Nanoscale Research Letters, 4 (6). pp. 550-557.

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Official URL: http://www.springerlink.com/content/n0223717407x90...

Abstract

Three-dimensional (3D) flower-like hierarchical β-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 β-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 μm. 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.

Item Type:Article
Subjects:Physical Science > Nano objects
Material Science > Nanochemistry
ID Code:5523
Deposited By:IoN
Deposited On:22 May 2009 16:20
Last Modified:22 May 2009 16:20

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