以六水氯化镁、氢氧化钠为原料,采用水热法合成碱式氯化镁晶须[9Mg(OH)2·MgCl2·5H2O,basic magnesium chloride,BMC],并分析了镁离子浓度、镁离子与氢氧化钠的摩尔比R、反应时间、反应温度对晶体制备的影响.用场发射扫描电镜、透射电镜、X射线衍射仪、选区衍射等对产物的形貌和组成进行表征.结果表明,180℃反应6h合成的BMC晶须长度为150 μm以上,直径在0.5～1 μm,长径比为150～400;BMC的生长实质上是以负离子配位多面体[Mg-(OH)4]2-及[Mg-Cl4]2-为生长结构基元,不同的晶体取向和叠合速度而形成的晶须.
参考文献
| [1] | Weiliu Fan;Xinyu Song;Sixiu Sun;Xian Zhao.Hydrothermal formation and characterization of magnesium hydroxide chloride hydrate nanowires[J].Journal of Crystal Growth,20071(1):167-174. |
| [2] | WU JianSong;XIAO YingKai;SU JingYun;DENG TingTing;FENG JieRong;MO YuYing;ZENG Mei.The growth mechanism of the basic magnesium chloride whisker[J].中国科学:技术科学（英文版）,2011(3):682-690. |
| [3] | Christensen AN.;Hanson JC.;Norby P..CHEMICAL REACTIONS IN THE SYSTEM MGO-MGCL2-H2O FOLLOWED BY TIME-RESOLVED SYNCHROTRON X-RAY POWDER DIFFRACTION[J].International Journal of Quantum Chemistry,19952(2):556-559. |
| [4] | HU JIANGTAO;ODOM TERI WANG;LIEBER CHARLES M..Chemistry and Physcis in One Dimension: Synthesis and Properties of Nanowires and Nanotubes[J].Accounts of Chemical Research,19995(5):435-445. |
| [5] | Xu, J;Xue, D.Chemical synthesis of BaCO3 with a hexagonal pencil-like morphology[J].The journal of physics and chemistry of solids,20067(7):1427-1431. |
| [6] | XU Hui;DENG Xin-rong.Preparation and properties of superfine Mg(OH)2 flame retardant[J].中国有色金属学会会刊（英文版）,2006(02):488-492. |
| [7] | Hua Gui;Xiaohong Zhang;Yiqun Liu;Weifu Dong;Qingguo Wang;Jianming Gao;Zhihai Song;Jinmei Lai;Jinliang Qiao.Effect of dispersion of nano-magnesium hydroxide on the flammability of flame retardant ternary composites[J].Composites science and technology,20076(6):974-980. |
| [8] | 张学华;罗豪甦;仲维卓.负离子配位多面体生长基元模型及其在晶体生长中的应用[J].中国科学E辑,2004(3):241-253. |
| [9] | 仲维卓;张学华;罗豪甦;华素坤.纳米晶生长习性机理--负离子配位多面体生长基元模型的应用[J].硅酸盐学报,2004(3):239-244. |
| [10] | 吴健松;肖应凯;苏静韵;邓婷婷;冯洁容;莫玉映;曾妹.碱式氯化镁晶须生长机理[J].中国科学（技术科学）,2011(5):564-572. |
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