In present work, mesoporous silica nanoparticles (MSNs) were prepared with a surface area of 1048 m²g^-1 and a large pore size of ca. 6 nm, using Stöber process in the presence of expanding reagent (-hexane). The surface of MSNs was modified with three different functional groups (amine, iminodiacetic acid, and glycine) and characterized by a variety of physicochemical techniques. The adsorption studies were carried out at different pH values in two extraction systems. In batch method, the maximum adsorption efficiency of heavy metals was measured to be 95% for all fabricated MSNs at pH 9. At pH 3, the adsorption efficiency of Pb and Cu was observed to be affected by the carboxylic moiety involved in the functional group. As the number of carboxylic moieties increase, the removal efficiency of Pb and Cu ions increased by two folds. The results demonstrated the selectivity of IDA-MSNs for the removal of Pb and Cu ions, even though the multielements are present in an aqueous solution. On the other hand, the incorporation of MSNs into the polymeric membrane showed high water permeability (), and 98% rejection was achieved at pH 7 for Cu⁺² and Pb⁺² ions.

中文翻译：

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甘氨酸，亚氨基二乙酸和氨基丙基功能化的二氧化硅纳米粒子的吸附效率评估从污染的水中去除潜在的有毒元素。

在目前的工作中，制备了具有1048 m ² g ^-1的表面积和约10μm的大孔径的介孔二氧化硅纳米粒子（MSN）。6纳米，在膨胀试剂存在下使用Stöber工艺（-己烷）。MSN的表面经过三个不同的官能团（胺，亚氨基二乙酸和甘氨酸）的修饰，并通过多种物理化学技术进行了表征。在两个萃取系统中，在不同的pH值下进行了吸附研究。在批处理方法中，在pH 9下，所有制造的MSN的重金属的最大吸附效率均为95％。在pH 3时，观察到Pb和Cu的吸附效率受官能团中所含羧基的影响。随着羧基的增加，Pb和Cu离子的去除效率提高了两倍。结果表明，即使水溶液中存在多种元素，IDA-MSN仍具有去除Pb和Cu离子的选择性。另一方面，）， Cu ⁺²和Pb ⁺²离子在pH 7时达到98％的排斥率。