Low-temperature growth and properties of flower-shaped - Ni(OH)2 and NiO structures composed of thin nanosheets networks
| Autor: | Mohammad Vaseem, Y.B. Hahn, Mohamed Bououdina, Saleh H. Al-Heniti, Farid El-Tantawy, Mohammad S. Al-Assiri, Ahmad Umar, Ali Al-Hajry |
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| Rok vydání: | 2008 |
| Předmět: |
Field emission microscopy
Thermogravimetric analysis Materials science Chemical engineering Thermal decomposition Non-blocking I/O General Materials Science Electrical and Electronic Engineering Fourier transform infrared spectroscopy Condensed Matter Physics High-resolution transmission electron microscopy Powder diffraction Nanosheet |
| Zdroj: | Superlattices and Microstructures. 44:216-222 |
| ISSN: | 0749-6036 |
| DOI: | 10.1016/j.spmi.2008.04.008 |
| Popis: | 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). |
| Databáze: | OpenAIRE |
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