Insight Studies on Metal-Organic Framework Nanofibrous Membrane Adsorption and Activation for Heavy Metal Ions Removal from Aqueous Solution
| Autor: | Christopher Q. Lan, Takeshi Matsuura, Dipak Rana, Johnson E. Efome |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Aqueous solution Metal ions in aqueous solution fungi Polyacrylonitrile 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Electrospinning 0104 chemical sciences chemistry.chemical_compound Membrane Adsorption Chemical engineering chemistry Nanofiber General Materials Science Metal-organic framework 0210 nano-technology |
| Zdroj: | ACS Applied Materials & Interfaces. 10:18619-18629 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.8b01454 |
| Popis: | Electrospun nanofiber composite membranes containing water-stable metal-organic frameworks (MOFs) particles (Zr-based MOF-808) supported on polyacrylonitrile (PAN) nanofiber synthesized via co-electrospinning have been prepared. MOF particles were dispersed in the organic polymer, and their subsequent presence was inferred by scanning electron microscopy. Membrane performance in heavy metal ion adsorption in batch filtration was evaluated on the basis of Cd2+ and Zn2+ ions sequestration. The adsorption capacities of the pristine MOF and the MOF composite membrane revealed that MOF particles in the membrane could be accessed for adsorption in the hydrophilic PAN membranes. The maximum adsorption capacities were 225.05 and 287.06 mg g–1 for Cd2+ and Zn2+, respectively. Conventional thermal activation of pristine MOF and composite membrane revealed a crystal downsizing, while “hydractivation” produced an expanded MOF with enhanced adsorption potentials. The PAN/MOF-808 “hydractivated” composite membrane coul... |
| Databáze: | OpenAIRE |
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