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Volume 22
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Wu, H., Gu, L., & Gao, G. (2015). Hydrothermal synthesis of ultrathin hexagonal nickel hydroxide nanosheets. Particuology, 22, 114-118. https://doi.org/10.1016/j.partic.2014.11.007
Hydrothermal synthesis of ultrathin hexagonal nickel hydroxide nanosheets
Hongjie Wu a, Liqiang Gu a, Guo Gao b *
a Institute of Automotive Engineering, School of Mechanical Engineering, National Engineering Laboratory for Automotive Electronic Control Technology, Shanghai Jiao Tong University, Shanghai 200240, China
b Institute of Nano Biomedicine and Engineering, Department of Instrument Science and Technology, Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
10.1016/j.partic.2014.11.007
Volume 22, October 2015, Pages 114-118
Received 18 September 2014, Revised 24 October 2014, Accepted 2 November 2014, Available online 14 February 2015, Version of Record 4 August 2015.
E-mail: guogao@sjtu.edu.cn
Highlights

• Ultrathin Ni(OH)2 nanosheets were hydrothermally synthesized using mixed surfactants.

• The diameter and thickness of the Ni(OH)2 nanosheets were 200–300 and 3–5 nm, respectively.

• Magnetization curve of the Ni(OH)2 nanosheets exhibited a paramagnetic behavior.


Abstract

Nickel hydroxide, Ni(OH)2 is widely used in electrodes of nickel-based alkaline secondary batteries. Ultrathin hexagonal Ni(OH)2 nanosheets of space group P-3m1 were hydrothermally prepared at 200 °C for 10 h. Their diameter and thickness were 200–300 and 3–5 nm, respectively. Their formation was attributed to the oriented assembly of growing particles, which was assisted by surfactant molecules. The specific surface area of the Ni(OH)2 nanosheets was 8.66 m2/g. Their magnetization curve exhibited linear paramagnetic behavior across the entire measurement region.

Graphical abstract
Keywords
Ni(OH)2 nanosheets; Hydrothermal method; PEG-200; Paramagnetic behavior
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