Mg(OH)2 crystals synthesized by CHM method
Using Mg(NO3)2·6H2O as raw materials, Mg(OH)2 crystals were synthesized by a composite-hydroxide-mediated(CHM) method at 160-200 oC for 24 h. Hexagonal plates Mg(OH)2 crystal were formed at high content of magnesium nitrate. The size of the plates increased to 5-15 μm while the content of magnesium nitrate was 30 mmol. The strength of (001) plane became stronger than (101) plane with the high content of magnesium nitrate, and this tendency became more obvious at high magnesium nitrate concentration. It is explained that the more Mg2+ ion fill the polar plane. The strength of (001) plane became stronger than (101) plane at high temperature. It can be explained Mg(OH)2 crystal become more steady with more non-polar plane at high temperature, and the shape of the sample showed a change from irregular to cubic shape with heated temperature increase. It indicates that the Mg(OH)2 crystal growth benefits from high temperature. It is conjectured that the connecting of the Mg(OH)64+ basic units with the common edges change into common vertex angle.
Mg(OH)2 CHM Hexagonal plates cubic crystals SEM XRD
Lin-hong Cao Shun-hua Zhi Ning-hui Wang
State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials,Southwest Uni Department of Electrical and Electronics Engineering, Dalian University of Technology, Dalian, Liaon
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
153-157
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）