This work was financially supported by the National Natural Science Foundation of China (Project 21071068, 20931003) and the Academic Doctoral Prize (Excellent PhD Academic Awards granted by Ministry of Education) of Lanzhou University.
Enhanced Separation of Potassium Ions by Spontaneous K+-Induced Self-Assembly of a Novel Metal–Organic Framework and Excess Specific Cation–π Interactions†
Article first published online: 11 AUG 2014
© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
How to Cite
Wu, W., Kirillov, A. M., Yan, X., Zhou, P., Liu, W. and Tang, Y. (2014), Enhanced Separation of Potassium Ions by Spontaneous K+-Induced Self-Assembly of a Novel Metal–Organic Framework and Excess Specific Cation–π Interactions. Angew. Chem. Int. Ed.. doi: 10.1002/anie.201404470
- Article first published online: 11 AUG 2014
- Manuscript Revised: 14 JUL 2014
- Manuscript Received: 19 APR 2014
- National Natural Science Foundation of China. Grant Numbers: 21071068, 20931003
- Ministry of Education
- hybrid materials;
- ion extraction;
- metal–organic framework;
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.