Low-temperature growth and properties of flower-shaped β - Ni(OH) 2 and NiO structures composed of thin nanosheets networks

Flower-shaped β - Ni(OH) 2 structures composed of thin nanosheet networks have been synthesized via the simple aqueous solution route by using nickel chloride and ammonium hydroxide at 65  ∘C in 4 h. The general morphological observations revealed that the flowers are composed of thin nanosheets whi...

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Bibliographic Details
Published in:Superlattices and microstructures 2008-08, Vol.44 (2), p.216-222
Main Authors: Al-Hajry, A., Umar, Ahmad, Vaseem, M., Al-Assiri, M.S., El-Tantawy, F., Bououdina, M., Al-Heniti, S., Hahn, Y.-B.
Format: Article
Language:English
Subjects:
[formula omitted]- Ni(OH) 2
Nanosheet networks
NiO
Solution process
Thermogravimetric studies
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Summary:Flower-shaped β - Ni(OH) 2 structures composed of thin nanosheet networks have been synthesized via the simple aqueous solution route by using nickel chloride and ammonium hydroxide at 65  ∘C in 4 h. The general morphological observations revealed that the flowers are composed of thin nanosheets which were connected to each other in such a manner that they form network-like morphologies. Moreover, single-crystalline flower-shaped NiO structures composed of thin nanosheets were also obtained by thermal decomposition of flower-shaped β - Ni(OH) 2 structures. The shape of nanosheet networks in β - Ni(OH) 2 was sustained after thermal decomposition to NiO however, some broken nanosheets were also observed from the flower-shaped structures of NiO. The as-prepared products were characterized by X-ray powder diffraction (XRD), field emission scanning electron microscope (FESEM), transmission electron microscope (TEM), high-resolution TEM (HRTEM), Fourier transform infrared spectroscopy (FTIR), and Thermogravimetric analysis (TGA).
ISSN:0749-6036
1096-3677
DOI:10.1016/j.spmi.2008.04.008