有机化学 ›› 2019, Vol. 39 ›› Issue (1): 151-156.DOI: 10.6023/cjoc201807054 上一篇    下一篇

所属专题: 庆祝陈庆云院士九十华诞

研究论文

环糊精/氨基粘土超分子水凝胶的构筑及其I3-/I2吸附性能

牛杰a, 陈湧a, 刘育a,b   

  1. a 南开大学化学学院 元素有机化学国家重点实验室 天津 300071;
    b 天津市化学化工协同创新中心 天津 300072
  • 收稿日期:2018-07-29 修回日期:2018-09-17 出版日期:2019-01-25 发布日期:2018-09-26
  • 通讯作者: 刘育 E-mail:yuliu@nankai.edu.cn
  • 基金资助:

    国家自然科学基金(Nos.21432004,21672113,21772099,21861132001,91527301)资助项目.

Construction of Cyclodextrin/Aminoclay-Based Supramolecular Hydrogel and Its I3-/I2 Adsorption Property

Niu Jiea, Chen Yonga, Liu Yua,b   

  1. a State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071;
    b Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin 300072
  • Received:2018-07-29 Revised:2018-09-17 Online:2019-01-25 Published:2018-09-26
  • Contact: 10.6023/cjoc201807054 E-mail:yuliu@nankai.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 21432004, 21672113, 21772099, 21861132001, 91527301).

氨基粘土(Aminoclay,AC)是一种具有片层结构的硅酸盐材料,由于其在水中具有高分散性的特点,因此被广泛应用于构筑智能杂化水凝胶.利用静电相互作用,将带负电的7-[6-脱氧-6-(2-乙磺酸)]-β-环糊精(磺化环糊精,SCD)与氨基粘土非共价结合,构筑了一种新型的杂化水凝胶,并利用X射线衍射(XRD)、扫描式电子显微镜(SEM)、傅里叶变换红外光谱(FT-IR)、Zeta电势、流变测试等对所构筑的凝胶进行了结构表征.进而发现SCD-AC凝胶在水相中展现出对I3-离子的高效吸附特性,并且在有机相中能够吸附I2分子.

关键词: 超分子水凝胶, 环糊精, 氨基粘土, 碘, 吸附

Aminoclay (AC), as a kind of layered silicates with positive charges, shows high dispersity in water and has been widely applied in the fabrication of intelligent hybrid hydrogel. Herein, heptakis-[6-deoxy-6-(2-sulfanylethanesulfonic acid)]-β-cyclodextrin (SCD), a kind of negatively charged cyclodextrin, was employed to construct the supramolecular hydrogel with aminoclay through the static electronic interactions, and the resultant SCD-AC hydrogel was fully characterized by means of X-ray powder diffraction (XRD), scanning electronic microscopy (SEM), fourier transform infrared spectroscopy (FT-IR), zeta potential, rheological test, etc. Significantly, the SCD-AC hydrogel can efficiently absorb not only I3- ion in aqueous solution but also I2 molecule in organic solvent, giving a high adsorption capacity up to 90% with 10 min.

Key words: supramolecular hydrogel, cyclodextrin, aminoclay, iodine, adsorption