Preparation of magnesium hydroxide nanoflowers from boron mud via anti-drop precipitation method

被引：41
作者：
Ma, Xi [1 ,2 ]
Ma, Hongwen [1 ]
Jiang, Xiaoqian [1 ]
Jiang, Zhouqing [1 ,2 ]
机构：
[1] China Univ Geosci, Sch Mat Sci & Technol, Beijing 100083, Peoples R China
[2] Blue Sky Technol Corp, Beijing 100083, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2014年 / 56卷
关键词：
Inorganic compounds; Chemical synthesis; Crystal structure; MG(OH)(2); NANOPARTICLES; NANO-MG(OH)(2); GROWTH;
D O I：
10.1016/j.materresbull.2014.04.021
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Using boron mud as the starting material, the flower-like magnesium hydroxide (MH) has been successfully prepared via anti-drop precipitation method. The effect of NH3 center dot H2O concentration, aging time, and surfactant on the morphology of MH was investigated. The optimum precipitation conditions are dropping MgSO4 solution in 5% NH3 center dot H2O solution, with 3% polyethylene glycol as surfactant, aging for 30 min. XRD, SEM, FI-IR, and TG/DTA have been employed to characterize the as-prepared samples. XRD reveals that MH with high purity has the brucite structure. SEM images show that the flower-like MH exists in the form of mono-disperse well uniform spherical aggregation with diameter of 3-5 mu m. TG/DTA shows a total percentage of weight loss 33.6% with a well-defined endothermic peak near 381.3 degrees C corresponding to the decomposition of MH. Furthermore, it reports that the extremely fast primary nucleation is of significance for crystal growth of MH. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：113 / 118
页数：6
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