A nature-inspired hydrogen-bonded supramolecular complex for selective copper ion removal from water
| Autor: | Jeffrey R. Long, Edmond W. Zaia, Tracy M. Mattox, Simon J. Teat, Yi-Sheng Liu, Chih-Wen Pao, Chaochao Dun, Peter Fiske, Jeffrey J. Urban, Jinghua Guo, Ngoc T. Bui, Robert Kostecki, Hyungmook Kang, Katie R. Meihaus, Jeng-Lung Chen, Gregory M. Su |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Water resources Metal ions in aqueous solution Science Supramolecular chemistry General Physics and Astronomy chemistry.chemical_element 02 engineering and technology Zinc Two-dimensional materials General Biochemistry Genetics and Molecular Biology Article Coordination complex Ion Environmental impact 03 medical and health sciences chemistry.chemical_compound Imidazole Organic-inorganic nanostructures lcsh:Science chemistry.chemical_classification Multidisciplinary Chemistry General Chemistry 021001 nanoscience & nanotechnology Combinatorial chemistry Copper Salicylaldoxime Coordination chemistry 030104 developmental biology lcsh:Q 0210 nano-technology |
| Zdroj: | Nature communications, vol 11, iss 1 Nature Communications Nature Communications, Vol 11, Iss 1, Pp 1-12 (2020) |
| Popis: | Herein, we present a scalable approach for the synthesis of a hydrogen-bonded organic–inorganic framework via coordination-driven supramolecular chemistry, for efficient remediation of trace heavy metal ions from water. In particular, using copper as our model ion of interest and inspired by nature’s use of histidine residues within the active sites of various copper binding proteins, we design a framework featuring pendant imidazole rings and copper-chelating salicylaldoxime, known as zinc imidazole salicylaldoxime supramolecule. This material is water-stable and exhibits unprecedented adsorption kinetics, up to 50 times faster than state-of-the-art materials for selective copper ion capture from water. Furthermore, selective copper removal is achieved using this material in a pH range that was proven ineffective with previously reported metal–organic frameworks. Molecular dynamics simulations show that this supramolecule can reversibly breathe water through lattice expansion and contraction, and that water is initially transported into the lattice through hopping between hydrogen-bond sites. Heavy metals and metalloids pose major threats to health and environmental ecosystems, thus systems for low-cost remediation are needed. Here the authors report the scalable design of a hydrogen-bonded organic–inorganic framework for selective removal of trace heavy metal ions from water. |
| Databáze: | OpenAIRE |
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