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弱酸介质中类球形谷氨酸/镁铝层状双氢氧化物的制备

李鑫,李淑萍*,陆天虹   

  1. (江苏省生物功能材料重点实验室，南京师范大学化学与材料科学学院 南京 210097)
  • 收稿日期:2011-06-14 修回日期:2011-10-17 出版日期:2012-05-10 发布日期:2012-05-10
  • 通讯作者: 李淑萍，教授; Tel:025-83598280; Fax:025-83598287; E-mail:lishuping@njnu.edu.cn; 研究方向：胶体与界面化学以及药物载体
  • 基金资助:
    国家自然科学基金(21073093)高等学校博士点专项科研基金(20103207120006)和江苏高校优势学科建设工程资助项目

Synthesis of Sphere-like Glutamic Acid/Magnesium-Alumina Layered Double Hydroxides in Weak Acidic Medium

LI Xin, LI Shuping*, LU Tianhong   

  1. (Jiangsu Key Laboratory of Biofunctional Material,College of Chemistry and
    Materials Science,Nanjing Normal University,Nanjing 210097,China)
  • Received:2011-06-14 Revised:2011-10-17 Published:2012-05-10 Online:2012-05-10

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摘要： 在弱酸性介质中，采用阴离子交换法合成了类球形的谷氨酸(Glu)/镁铝层状双氢氧化物(MgAl-LDH)复合物，研究了介质pH值对所得Glu/LDH纳米复合物性质和形貌的影响。 结果表明，与碱性介质中阴离子交换法得到的不规则六角形粒子相比，该法制备的纳米粒子呈类球形，且粒径较小，最佳pH值为5.0，探讨了可能的反应机理。

关键词: 层状双氢氧化物, 谷氨酸, 纳米复合物

Abstract: Glutamic acid(Glu for short)/magnesium-aluminum layered double hydroxide compounds(Mg-Al-LDH) were prepared in weak acidic medium, and the influence of pH values on the properties of Glu/LDH compounds was investigated. It was found that Glu/LDH particles prepared in weak acidic medium were sphere-like with smaller size compared with that of traditional ion-exchange method. Our study also indicated that the variation of pH value could change the morphology and dispersion state of Glu/LDH particles. The reaction mechanism is discussed.

Key words: layered double hydroxide, glutamic acid, nanocompounds

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