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Modified Fe3O4 colloidal dispersed magnetic particles as carrier in liquid membranes

A. C. NECHIFOR1,2, M. G. STOIAN1, S. I. VOICU1,* , G. NECHIFOR1

Affiliation

  1. University Politehnica from Bucharest, Faculty of Applied Chemistry and Materials Sciences, 1-7 Gheorghe Polizu, Bucharest, 011061, Romania
  2. National Institute for research and Development in Microtechnologies (IMT-Bucharest) 126A, Erou Iancu Nicolae Street, Bucharest 077190, Romania

Abstract

In this paper we present the results related to magnetic particles synthesis (obtained by a variant of Massart method, which consists in ferric ions co-precipitation into a potassium hydroxide solution) and their stabilization with SAP 230 (consisting of a mixture of two modified polyisobutene derivatives in mineral base oil). The obtained stabilized magnetic particles were functionalized with a crown ether derivative (aminobenzo-18-crown ether) and used for liquid membranes preparation in dioxan. The colloidal magnetic particles were characterized by FT-IR spectroscopy, thermal analysis and Scanning Electron Microscopy and Na+ and K+ from different inorganic salts were separated in order to test and evaluate the liquid membrane performances.

Keywords

Colloids, Magnetic particles, Crown ethers, Liquid membrane.

Citation

A. C. NECHIFOR, M. G. STOIAN, S. I. VOICU, G. NECHIFOR, Modified Fe3O4 colloidal dispersed magnetic particles as carrier in liquid membranes, Optoelectronics and Advanced Materials - Rapid Communications, 4, 8, August 2010, pp.1118-1123 (2010).

Submitted at: June 29, 2010

Accepted at: Aug. 12, 2010