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Molecular nanocapsule-decorated porous monolith: preparation and elimination of cationic dyes from water

机译：分子纳米腐植物装饰多孔全整体：制备和消除水中的阳离子染料

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摘要

To deal with cationic organic micropollutants in water, a macroscopic and porous adsorbent with the surface decorated with negatively charged molecular nanocapsules is described. The molecular nanocapsule is obtained by transforming hydroxyls of hyperbranched polyglycerol (PG) into carboxyls, and some of the carboxyls are capped by polystyrene-NH2 (PS-NH2) to form a hydrophobic shell. The successful synthesis of PS-NH2 is supported by matrix-assisted laser desorption and ionization time-of-flight (MALDI-TOF) spectra. The dendritic amphiphile of PG-COOH@ PS can self-assemble along a water/oil interface to form a high internal phase emulsion (HIPE), where the continuous oil phase is styrene/divinyl benzene (St/DVB) and the dispersed phase is small water droplets, with oil/water = 20/80 (weight ratio). Polymerization of the oil phase and removal of the water droplets leads to an open-cellular material termed polyHIPE. The polyHIPE is characterized by an open-cellular porous structure and the surface-attached dendritic amphiphiles, and can eliminate cationic organic dyes from water.
机译：为了应对水中的阳离子有机微量渗透剂，描述了用带负电的分子纳米胶囊装饰的表面的宏观和多孔吸附剂。通过将超溴聚甘油（PG）的羟基转化为羧基来获得分子纳米胶囊，并且一些羧基通过聚苯乙烯-NH 2（PS-NH2）封端以形成疏水壳。通过基质辅助激光解吸和离子化飞行时间（MALDI-TOF）光谱来支持PS-NH2的成功合成。 PG-COOH @ PS的树突状两亲物可以沿水/油界面自组装以形成高内相乳液（HIPE），其中连续油相是苯乙烯/二乙烯基苯（ST / DVB），分散相是小水滴，用油/水= 20/80（重量比）。油相的聚合并除去水滴导致开孔材料称为聚丙烯。聚合的特征在于开孔多孔结构和表面附着的树突式两亲性，并且可以消除来自水的阳离子有机染料。

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  • 来源
    《RSC Advances》 |2016年第60期|共7页
  • 作者

    Hu Ruoxi; Wan Decheng; Jin Ming;

  • 作者单位

    Tongji Univ Sch Mat Sci &

    Engn Inst Funct Polymers 4800 Cao An Rd Shanghai 201804 Peoples R China;

    Tongji Univ Sch Mat Sci &

    Engn Inst Funct Polymers 4800 Cao An Rd Shanghai 201804 Peoples R China;

    Tongji Univ Sch Mat Sci &

    Engn Inst Funct Polymers 4800 Cao An Rd Shanghai 201804 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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