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Volume 24
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Chen, Y., Zhou, T., Fang, H., Li, S., Yao, Y., Fan, B., & Wang, J. (2016). A novel preparation of nanosized hexagonal Mg(OH)2 as a flame retardant. Particuology, 24, 177-182. https://doi.org/10.1016/j.partic.2015.01.007
A novel preparation of nanosized hexagonal Mg(OH)2 as a flame retardant
Yongbin Chen, Tao Zhou *, Huaxiong Fang, Simin Li, Yuting Yao, Bailin Fan, Jian Wang
Key Laboratory of Resources Chemistry of Nonferrous Metals, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
10.1016/j.partic.2015.01.007
Volume 24, February 2016, Pages 177-182
Received 1 November 2014, Revised 1 January 2015, Accepted 10 January 2015, Available online 21 May 2015, Version of Record 21 January 2016.
E-mail: zhoutao@csu.edu.cn
Highlights

• An ammonia-hydrothermal method was used to prepare hexagonal Mg(OH)2 nanoplates.

• Mg(OH)2 particles with good dispersivity and uniform size distribution were prepared.

• Optimum operating conditions were determined for preparing nano-sized Mg(OH)2.

• Mg(OH)2 crystal growth and size were controlled by MEA concentration.


Abstract

Nanosized dispersive hexagonal magnesium hydroxide (Mg(OH)2) has been prepared using an ammonia-hydrothermal method. Citric acid and monoethanolamine (MEA) were added to the reaction system during the ammonia precipitation and hydrothermal processes, respectively, to improve the crystallinity and dispersion of the (Mg(OH)2) particles. The resulting Mg(OH)2 samples obtained under the optimum preparation conditions were characterized by scanning electron microscopy, X-ray diffraction and thermal gravity analysis, which showed that this newly developed procedure afforded well-dispersed hexagonal nanoplates of Mg(OH)2 with a mean diameter of 246 nm.

Graphical abstract
Keywords
Nanosized; Mg(OH)2; Hydrothermal process; Dispersion
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