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- Title
Enhanced Separation of Potassium Ions by Spontaneous K<sup>+</sup>-Induced Self-Assembly of a Novel Metal-Organic Framework and Excess Specific Cation-π Interactions.
- Authors
Wu, Wenyu; Kirillov, Alexander M.; Yan, Xuhuan; Zhou, Panpan; Liu, Weisheng; Tang, Yu
- Abstract
A novel metal-organic framework (MOF) was fabricated by spontaneous K+-induced supramolecular self-assembly with the embedded tripodal ligand units. When the 3D ligand was loaded onto Fe3O4@mSiO2 core-shell nanoparticles, it could effectively separate K+ ions from a mixture of Na+, K+, Mg2+, and Ca2+ ions through nanoparticle-assisted MOF crystallization into a Fe3O4@mSiO2@MOF hybrid material. Excess potassium ions could be extracted because of the specific cation-π interaction between K+ and the aromatic cavity of the MOF, leading to enhanced separation efficiency and suggesting a new application for MOFs.
- Subjects
POTASSIUM ions; METAL-organic frameworks; SUPRAMOLECULAR chemistry; LIGANDS (Chemistry); NANOPARTICLES
- Publication
Angewandte Chemie, 2014, Vol 126, Issue 40, p10825
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201404470