Bozkurt, SelahattinKocabaş, ErdalDurmaz, MustafaYılmaz, MustafaSirit, Abdülkadir2020-03-262020-03-2620090304-38941873-3336https://dx.doi.org/10.1016/j.jhazmat.2008.10.096https://hdl.handle.net/20.500.12395/23887Three new silica gel-immobilized calix[4]arene polymers 9-11 have been prepared via modification of calix[4]arene mono amido derivatives 3-5 with 3-aminopropyl triethoxysilane (APTES) and activated silica gel, respectively. The polymers were characterized by Fourier transform infrared spectroscopy, elemental analysis and thermal gravimetric analysis. The solid-liquid extraction properties of ligands 3-5 along with their immobilized derivatives 9-11 towards dichromate (HCr2O7-/Cr2O72-) anions were reported. It was found that these calix[4]arene-based polymers have high extraction abilities towards dichromate anions as compared to their monomeric precursors. (C) 2008 Elsevier B.V. All rights reserved.en10.1016/j.jhazmat.2008.10.096info:eu-repo/semantics/closedAccessPolymeric calix[4]areneDichromate anionMonoamideSorptionSolid-liquid extractionArticle16501.03.202097497919081182Q1WOS:000266121700130Q1