Desingn of mercury (II) adsorption sites on high disperse silica surface
Adsorption has been sutied of Hg (II) ions with hydroxylated silica, aminopropylsilica, and silicas chemically modified with b-cyclodextrin derivatives. The kinetics of Hg (II) adsorption as tested within the Lagergren model for the pseudo-first and pseudo-second order proc...
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| Datum: | 2008 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | Russisch |
| Veröffentlicht: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2008
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| Online Zugang: | https://surfacezbir.com.ua/index.php/surface/article/view/282 |
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| Назва журналу: | Surface |
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Surface| Zusammenfassung: | Adsorption has been sutied of Hg (II) ions with hydroxylated silica, aminopropylsilica, and silicas chemically modified with b-cyclodextrin derivatives. The kinetics of Hg (II) adsorption as tested within the Lagergren model for the pseudo-first and pseudo-second order processes, the adsorption isotherms being fitted to the Freundlich and Langmuir equations. The β-cyclodextrin-containing adsorbents were found to have high affinities to Hg (II) due to “ β-cyclodextrin – nitrate-ion” inclusion complexes and super molecules formed on their surfaces. The chemical composition of super molecules correlates with stability of mercury (II)  surface complexes. |
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