Yan Chenglin, Xue Dongfeng
State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, 158 Zhongshan Road, Dalian 116012, China.
J Phys Chem B. 2005 Jun 30;109(25):12358-61. doi: 10.1021/jp050644z.
A novel self-assembled microstructure, nestlike Mg(5)(CO(3))(4)(OH)(2).4H(2)O spheres, is formed by a self-assembly of nanosheets in the hydrothermal process. MgO with the similar morphology can be obtained by calcination of nestlike Mg(5)(CO(3))(4)(OH)(2).4H(2)O. MgO precursors with a uniform, ellipsoid-shaped, and smooth surface or flowerlike architecture, built by individual thin sheets, can be well-obtained by carefully controlling pH values of the initial reaction solution. The nestlike MgO exhibits a unique geometrical shape; its surface is composed of uniform MgO nanosheets. The unique MgO microstructure with high surface areas may possess promising applications as the sorbent for chemisorption and destructive adsorption of various pollutants.
一种新型的自组装微观结构，即巢状Mg₅(CO₃)₄(OH)₂·4H₂O球体，是在水热过程中由纳米片自组装形成的。通过煅烧巢状Mg₅(CO₃)₄(OH)₂·4H₂O可以得到具有相似形态的MgO。通过仔细控制初始反应溶液的pH值，可以很好地获得由单个薄片构建的具有均匀、椭圆形且表面光滑或花状结构的MgO前驱体。巢状MgO呈现出独特的几何形状；其表面由均匀的MgO纳米片组成。具有高表面积的独特MgO微观结构作为各种污染物化学吸附和破坏性吸附的吸附剂可能具有广阔的应用前景。
