A case study for the uranyl recovery over magnetically retrievable Cu-BTC@Fe3O4 nanocomposites

A case study for the uranyl recovery over magnetically retrievable Cu-BTC@Fe3O4 nanocomposites

A magnetic Metal–Organic Framework (MOF) nanocomposite, namely Cu-BTC@Fe 3 O 4 (BTC = 1,3,5-benzenetricarboxylate) was used for magnetically retrievable separation of uranyl (UO 2 2+ ) in the presence of competitive ions. A significant adsorption amount of 312 mg/g was achieved for uranium over Cu-B...

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Veröffentlicht in:Journal of radioanalytical and nuclear chemistry 2023-06, Vol.332 (6), p.1667-1675
Hauptverfasser: Sun, Zhong-Hua, Sheng, Pan-Pan, Li, Zi-Jie, Wang, Le-Yao, Bao, Wen-Li, Yuan, Li-Yong, Shi, Wei-Qun, Zhang, Zhi-Hui
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Chemistry and Materials Science
Copper
Diagnostic Radiology
Fine structure
Hadrons
Heavy Ions
Inorganic Chemistry
Iron oxides
Metal-organic frameworks
Nanocomposites
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Uranium
X ray absorption
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Zusammenfassung:A magnetic Metal–Organic Framework (MOF) nanocomposite, namely Cu-BTC@Fe 3 O 4 (BTC = 1,3,5-benzenetricarboxylate) was used for magnetically retrievable separation of uranyl (UO 2 2+ ) in the presence of competitive ions. A significant adsorption amount of 312 mg/g was achieved for uranium over Cu-BTC@Fe 3 O 4 at a pH value of 4.5. Extended X-ray Absorption Fine Structure (EXAFS) analysis indicated that the interaction of Cu-BTC@Fe 3 O 4 with UO 2 2+ is the synergistic coordination of carboxylate groups of BTC ligand, Fe 3 O 4 -COOH, and hydrate H 2 O for UO 2 2+ ions. In addition to identifying a stable and retrievable adsorbent, the results generally elucidate UO 2 2+ removal of MOFs composites.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-023-08878-5