Journal
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 29, Issue 8, Pages 2378-2383Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.msec.2009.06.008
Keywords
Calix[4]arene; Magnetite nanoparticles; Dichromate anion; Anion extraction
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Funding
- The Research Foundation of Selcuk University
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Magnetic Fe3O4 nanoparticles were prepared by the chemical co-precipitation of Fe(III) and Fe(II) ions. Then, the nanoparticles were modified directly by 3-aminopropyltrimethoxy silane (APTMS) to introduce reactive groups onto the particles' surface, and diester derivative of calix[4]arene was immobilized onto the surface of modified-Fe3O4 nanoparticles by aminolysis reaction. The prepared magnetite nanoparticles (Calix-GM) were characterized by a combination of IR, TGA and TEM analyses. The extraction properties of the new material toward dichromate anions were also studied. It was observed that the prepared magnetite nanoparticles were an effective extractant for the removal of dichromate anions at pH 2.5-4.5. (C) 2009 Elsevier B.V. All rights reserved.
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