Abstract
It has been shown that diethylenetriamine (DETA)-functionalized magnetic carriers are able to complex copper ions from dilute streams. Complexometric titration using a copper selective electrode indicates the complexation of 0.52 μmol of Cu 2+ per 50 mg of magnetic carriers. This loading capacity is equivalent to the removal of 100 ppm of copper ions from a 1-liter solution by 3 g of magnetic carriers. X-ray photoelectron spectroscopy (XPS) results confirm the presence of Cu 2p bands, indicating the loading of copper ions. A shift of the nitrogen N 1s bands to higher binding energies confirms the involvement of secondary amine and amide nitrogen atoms from DETA-functionalized carriers in copper complexation.
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