Hydrothermal synthesis of ultrathin hexagonal nickel hydroxide nanosheets_中国颗粒学会

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Partic. vol. 22 pp. 114-118 (October 2015)
doi: 10.1016/j.partic.2014.11.007

Short communication

Hydrothermal synthesis of ultrathin hexagonal nickel hydroxide nanosheets

Hongjie Wua, Liqiang Gua, Guo Gaob,*

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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

Ultrathin hexagonal hydroxide nanosheets (diameter in 200–300 nm, thickness in 3–5 nm) were successfully prepared by a facile hydrothermal method.

Image for unlabelled figure

Keywords

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