Adsorption of Designed Pyrimidine Derivative Ligands on an Activated Carbon for the Removal of Cu(II) Ions from Aqueous Solution
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- 作者：Marí ; a D. Gutié ; rrez-Valero ; M. Luz Godino-Salido ; Paloma Arranz-Mascaró ; s ; Rafael Ló ; pez-Garzó ; n ; Rafael Cuesta ; Javier Garcí ; a-Martí ; n
- 刊名：Langmuir
- 出版年：2007
- 出版时间：May 22, 2007
- 年：2007
- 卷：23
- 期：11
- 页码：5995 - 6003
- 全文大小：235K
- 年卷期：v.23,no.11(May 22, 2007)
- ISSN：1520-5827
文摘
The adsorption of five N
-substituted amino acids with a 5-nitroso-6-oxo pyrimidine as substituent on a commercialactivated carbon (AC) has been studied in aqueous solution at several pH values. The adsorption processes of theseorganic compounds have been analyzed on the basis of the electrolytic behavior of the adsorbates. In all cases, theadsorption process is highly irreversible due to strong 
- interactions between the arene centers of the AC and thepyrimidine residue of the adsorbates. This interaction is consistent with XPS data and HOMO-LUMO theoreticalcalculations. The adsorption of these organic compounds provides a new route for the functionalization of the ACsurface with carboxyl groups. In addition, the adsorption capacity of the AC/organic compound systems for Cu(II)ions in aqueous solution has been studied at different pH values. These systems show an increase of the adsorptioncapacity for Cu(II) compared to the AC, which is related to the AC functionalization with carboxyl groups due tothe adsorbed organic compounds.
-substituted amino acids with a 5-nitroso-6-oxo pyrimidine as substituent on a commercialactivated carbon (AC) has been studied in aqueous solution at several pH values. The adsorption processes of theseorganic compounds have been analyzed on the basis of the electrolytic behavior of the adsorbates. In all cases, theadsorption process is highly irreversible due to strong - interactions between the arene centers of the AC and thepyrimidine residue of the adsorbates. This interaction is consistent with XPS data and HOMO-LUMO theoreticalcalculations. The adsorption of these organic compounds provides a new route for the functionalization of the ACsurface with carboxyl groups. In addition, the adsorption capacity of the AC/organic compound systems for Cu(II)ions in aqueous solution has been studied at different pH values. These systems show an increase of the adsorptioncapacity for Cu(II) compared to the AC, which is related to the AC functionalization with carboxyl groups due tothe adsorbed organic compounds.