Synthesis and dichromate anion sorption of silica gel-immobilized calix[4]arenes

BOZKURT S., Kocabas E., Durmaz M., Yilmaz M., Sirit A.

Journal of Hazardous Materials, vol.165, no.1-3, pp.974-979, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 165 Issue: 1-3
  • Publication Date: 2009
  • Doi Number: 10.1016/j.jhazmat.2008.10.096
  • Journal Name: Journal of Hazardous Materials
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.974-979
  • Keywords: Dichromate anion, Monoamide, Polymeric calix[4]arene, Solid-liquid extraction, Sorption
  • Uşak University Affiliated: Yes

Abstract

Three 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. © 2008 Elsevier B.V. All rights reserved.