Ion extraction applications of bilayer-structured hybrid silicas†,Materials Chemistry Frontiers

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Ion extraction applications of bilayer-structured hybrid silicas†
Materials Chemistry Frontiers ( IF 6.0 ) Pub Date : 2018-03-15 00:00:00 , DOI: 10.1039/c8qm00022k
R. Besnard _{1,

2,

3,

4,

5} , R. Winkler _{1,

2,

3,

4,

5} , G. Arrachart _{1,

2,

3,

4,

5} , J. Cambedouzou _{1,

2,

3,

4,

5} , S. Pellet-Rostaing _{1,

2,

3,

4,

5}

Affiliation

The self-assembly behaviour of amino-undecyl-triethoxysilane, which can be considered as an amphiphilic organosilane, has been used for the preparation of nanostructured materials. Due to the possibilities offered by this approach, lamellar hybrid materials bearing amine groups can be achieved. In this study, the reactive amino groups at the surface of the hybrid silica were modified for introducing ligands. For this purpose, various glycolamic acid groups have been introduced at the interface between two bilayers on the hybrid material obtained after condensation of silylated amines. The availability of the amino groups and the efficiency of the chemical immobilization of amic acid ligands onto the materials were followed by FTIR, NMR and TGA analysis, and the structural modifications induced by grafting were evaluated by SAXS experiments. The resulting materials exhibit a large number of amic acid groups. The adsorption capacities for rare earth elements were also investigated.

中文翻译：

双层结构杂化二氧化硅的离子萃取应用†

可以将氨基十一烷基三乙氧基硅烷视为两亲性有机硅烷的自组装行为已用于制备纳米结构材料。由于这种方法提供的可能性，可以实现带有胺基的层状杂化材料。在这项研究中，杂化二氧化硅表面的反应性氨基被修饰以引入配体。为此目的，在硅烷化的胺缩合后获得的杂化材料上的两个双层之间的界面处引入了各种氨基甲酸酯基。通过FTIR，NMR和TGA分析跟踪氨基的可用性和将酰胺酸配体化学固定在材料上的效率，并通过SAXS实验评估由接枝引起的结构修饰。所得材料显示出大量的酰胺酸基团。还研究了稀土元素的吸附能力。

更新日期：2018-03-15

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