Facile Synthesis of the Magnetic Metal Organic Framework Fe3O4@UiO-66-NH2 for Separation of Strontium.
- Author:
Liang Liang YIN
1
;
Xiang Yin KONG
1
;
Yao ZHANG
1
;
Yan Qin JI
1
Author Information
- Publication Type:Journal Article
- Keywords: Adsorbents; Fe3O4@UiO-66-NH2; Magnetic metal organic framework (MMOF); Radioactivity; Strontium
- MeSH: Adsorption; Ferrosoferric Oxide; chemistry; Hydrogen-Ion Concentration; Metal-Organic Frameworks; chemical synthesis; chemistry; Models, Theoretical; Nanoparticles; chemistry; Strontium; analysis; Surface Properties; Water Pollutants, Radioactive; analysis; Water Purification; methods
- From: Biomedical and Environmental Sciences 2018;31(6):483-488
- CountryChina
- Language:English
- Abstract: A magnetic metal organic framework (MMOF) was synthesized and used to separate Sr2+ in aqueous solution. The shape and structure of prepared Fe3O4@UiO-66-NH2 were characterized, and the absorbed concentration of strontium was determined through inductively coupled plasma mass spectrometry. The results indicated that Fe3O4 and UiO-66-NH2 combined through chemical bonding. The experimental adsorption results for separation of Sr2+ in aqueous solution indicated that the adsorption of Sr2+ to Fe3O4@UiO-66-NH2 increased drastically from pH 11 to pH 13. The adsorption isotherm model indicated that the adsorption of Sr2+ conformed to the Freundlich isotherm model (R2 = 0.9919). The MMOF thus inherited the superior qualities of magnetic composites and metal organic frameworks, and can easily be separated under an external magnetic field. This MMOF thus has potential applications as a magnetic adsorbent for low level radionuclide 90Sr.
