Adsorption of cesium and some typical elements on a novel solid-state macroporous silica-calix[4]arene material
Adsorption of cesium and some typical elements on a novel solid-state macroporous silica-calix[4]arene material
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DOI：
10.1080/01496395.2016.1197250
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发表时间：
2016-06
影响因子：
2.8
通讯作者：
A. Zhang;Chunmei Chen;Yining Wang;Tengyang Gao
中科院分区：
文献类型：
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作者：
A. Zhang;Chunmei Chen;Yining Wang;Tengyang Gao
合成了25，27-双（1-己氧基）杯[4]芳烃-26，28-冠-6（HexylCalix[4]C6）。将HexylCalix[4]C6浸渍并固定在SiO2-P颗粒中，制备了一种新型大孔SiO2基复合材料HexylCalix [4]C6@SiO2。研究了HexylCalix[4]C6@SiO2在0.3-5.0 M HNO 3范围内对17种典型金属离子的吸附。除Rb（I）和Pd（II）外，该材料对Cs（I）具有较强的吸附能力和较好的选择性。探讨了该材料对Cs（I）的最佳HNO 3浓度和吸附机理。通过总有机碳（TOC）评价HexylCalix[4]C6@SiO2在水相中的溶解度。证实了Hexyl Calix[4]C6@SiO2用于Cs（I）分离的技术可行性。
ABSTRACT 25,27-Bis(1-hexyloxy)-calix[4]arene-26,28-crown-6 (HexylCalix[4]C6) was synthesized. A new macroporous silica-based composite material, HexylCalix[4]C6@SiO2, was prepared through impregnation and immobilization of HexylCalix[4]C6 into the SiO2-P particles. The adsorption of 17 species of typical metals onto HexylCalix[4]C6@SiO2 in the range of 0.3–5.0 M HNO3 was investigated. The material exhibited strong adsorption ability and excellent selectivity for Cs(I) over all the tested metals except for Rb(I) and Pd(II). The optimum HNO3 concentration and the adsorption mechanism of Cs(I) onto the material were discussed. The solubility of HexylCalix[4]C6@SiO2 in aqueous phase was evaluated by total organic carbon (TOC). The technical feasibility of application of Hexyl Calix[4]C6@SiO2 in Cs(I) separation was confirmed.