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- Title
Fabrication of UiO-66-(OH)<sub>2</sub> amine oxime derivatives and their highly efficient and selective adsorption of uranium (VI).
- Authors
Zhang, Siqin; Ren, Zheng; Chen, Fang; Zhang, Kang; Fu, Xibiao; Xiao, Fangzhu; Peng, Guowen
- Abstract
It has of practical significance for environmental protection to find adsorbents with high efficiency, high adsorption capacity and high selectivity to treat radioactive uranium-containing wastewater. The metal–organic framework compound UiO-66-(OH)2 was synthesized by refluxing ZrCl4 and 2,5-dihydroxyterephthalic acid in N, N-dimethylformamide (DMF) at 80 ℃. UiO-66-(OH)2 was functionalized with hydroxylamine hydrochloride. UiO-66-(OH)2 amidoxime derivative obtained through chemical modification is used as adsorbent to adsorb U(VI). The result shows that the adsorption process of U(VI) on UiO-66-(OH)2 amidoxime derivative follows pseudo-second-order kinetics, the adsorption isotherm conforms to the Langmuir adsorption isotherm model. The material has good adsorption performance whose experimental results showed that the adsorption ratio of UiO-66-(OH)2 amidoxime derivative was 87.4% at C0 = 15 mg L−1, pH = 10.0 and T = 25 °C, indicating that the UiO-66-(OH)2 amidoxime derivative is a potential uranium adsorbent.
- Subjects
LANGMUIR isotherms; OXIMES; AMINE derivatives; URANIUM; ADSORPTION isotherms; ADSORPTION (Chemistry); OXIME derivatives; URANIUM oxides
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2022, Vol 331, Issue 4, p1521
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-022-08201-8