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https://hdl.handle.net/10442/19394
[1]
P. Bika et al., “Detection and Selective Sorption of Copper Ions by a COF-Modified Melamine Sponge,” ACS omega, vol. 10, no. 21, Jun. 2025.
Εξειδίκευση τύπου : | Άρθρο σε επιστημονικό περιοδικό |
Τίτλος: | Detection and Selective Sorption of Copper Ions by a COF-Modified Melamine Sponge |
Δημιουργός/Συγγραφέας: | Bika, Panagiota Ioannidis, Nikolaos Tsipas, Polychronis Papagiannis, Stefanos Gatou, Maria-Anna Pavlatou, Evangelia A Karydas, Andreas Germanos Stergiopoulos, Thomas [EL] Δάλλας, Παναγιώτης[EN] Dallas, Panagiotis ![]() |
Ημερομηνία: | 2025-06-03 |
Γλώσσα: | Αγγλικά |
ISSN: | 2470-1343 2470-1343 |
DOI: | 10.1021/acsomega.5c01393 |
Άλλο: | 40488043 |
Περίληψη: | Commercial melamine sponges were modified with a functional covalent organic framework (COF), and they were evaluated as adsorbents of divalent copper cations from aqueous solutions. A phosphazene unit successfully covered the surface of the melamine sponge, and the organic framework was subsequently formed through the nucleophilic substitution with 4,4' bipyridine. The covalent organic framework functionalized on the melamine sponge can detect and effectively adsorb copper compounds in aqueous solutions. Its selectivity toward the adsorption of copper was demonstrated through the presence of different metal salts. Four competitive metal cations, i.e., copper, nickel, iron, and calcium, were selected to confirm the preferential binding of copper on the COF-functionalized sponge. The outcome was determined through the studies of X-Ray Fluorescence elemental analysis, X-Ray Photoelectron Spectroscopy (XPS), and Electron Paramagnetic Resonance experiments. XRF reported a copper sorption capacity of 293 μg cm-2, which is nearly nine times higher than the performance of the pristine sponge. Q-band EPR measurements demonstrated the presence of different coordination sites with different substituents for copper on the modified sponges, when the adsorption took place in an aqueous solution containing exclusively copper cations, while only one coordination, the favorable trigonal bipyramidal geometry, was obtained in the presence of additional metals. |
Τίτλος πηγής δημοσίευσης: | ACS omega |
Τόμος/Κεφάλαιο: | 10 |
Τεύχος: | 21 |
Θεματική Κατηγορία: | [EL] Αναλυτική χημεία[EN] Analytical chemistry![]() [EL] Χημεία[EN] Chemistry ![]() |
Λέξεις-Κλειδιά: | adsorption copper covalent organic frameworks melamine metals |
Χρηματοδότης: | European ResearchCouncil (ERC) |
EU Grant: | ATTP4 0359579 COF4SEA |
EU Grant identifier: | 818615-MIX2FIX MIS 5217185 |
Κάτοχος πνευματικών δικαιωμάτων: | © 2025 The Authors. Published by American Chemical Society |
Όροι και προϋποθέσεις δικαιωμάτων: | This article is licensed under CC-BY 4.0. |
Ηλεκτρονική διεύθυνση στον εκδότη (link): | https://doi.org/10.1021/acsomega.5c01393o |
Εμφανίζεται στις συλλογές: | Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο |
Αρχεία σε αυτό το τεκμήριο:
Αρχείο | Περιγραφή | Σελίδες | Μέγεθος | Μορφότυπος | Έκδοση | Άδεια | |
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Bika et al_2025_10.1021 acsomega.5c01393.pdf | Open access article | 9.34 MB | Adobe PDF | Δημοσιευμένη/του Εκδότη | ![]() | Δείτε/ανοίξτε |