Adsorption properties of silica with covalently bound 8-hydroxyquinoline with respect to toxic metal ions

• Datum: 2006
• Hauptverfasser: Glushchenko, O.V., Yanovska, E.S., Kichkiruk, O.Yu., Tertykh, V.A.
• Format: Artikel
• Sprache: English
• Veröffentlicht: НТК «Інститут монокристалів» НАН України 2006
• Schriftenreihe: Functional Materials
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/140065
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Adsorption properties of silica with covalently bound 8-hydroxyquinoline with respect to toxic metal ions / O.V. Glushchenko, E.S. Yanovska, O.Yu. Kichkiruk, V.A. Tertykh // Functional Materials. — 2006. — Т. 13, № 2. — С. 265-269. — Бібліогр.: 18 назв. — англ.

Conditions of a single-stage chemical Ьinding of 8-hydroxyquinoline molecules to the surface of inorganic matrix using of the Mannich aminomethylation reaction and adsorption properties of so obtained chemically modified silica with respect to ions of toxic metals have been studied. The synthetic method provides a high concentration and a homogeneous distribution of complexing groups over the surface, and the adsorbent obtained displays a high capacity to some environmentally toxic metals (>2 mmol/g) and satisfactory adsorption kinetic properties, thus making it possible to use the adsorbent for the ion preconcentration both in static and dynamic modes. The structure studies of toxic metal complexes with 8-hydroxyquinoline immobilized at silica surface by ESR and IR spectroscopy testify that the metal ions are co-ordinated with bound ligand through nitrogen and oxygen atoms.