Adsorption of cesium and some typical elements on a novel solid-state macroporous silica-calix[4]arene material

作者：Zhang, Anyun^*; Chen, Chunmei; Wang, Yining; Gao, Tengyang

来源：Separation Science and Technology (Philadelphia), 2016, 51(12): 1962-1970.

DOI：10.1080/01496395.2016.1197250

• Adsorption
• cesium preparation
• silica-based support
• supramolecular recognition material

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.

• 出版日期2016
• 单位浙江大学