Post-synthetic modification of MIL-125 with bis-quinoline Mannich bases for removal of heavy metals from wastewater
| Autor: | Mardia T. El Sayed, Ramzy Abdelaziz, Mohamed El-Naggar, Eman S. Zarie, Reda M. Abdelhameed, Rabab A. Ismail |
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| Rok vydání: | 2019 |
| Předmět: |
Transamination
02 engineering and technology Wastewater 010402 general chemistry 01 natural sciences Chemical reaction chemistry.chemical_compound Adsorption Moiety General Materials Science Fourier transform infrared spectroscopy ta216 chemistry.chemical_classification Chemistry Quinoline General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Titanium-metal organic frameworks Heavy metals Mechanics of Materials Mannich bases Proton NMR 0210 nano-technology Nuclear chemistry |
| Zdroj: | Microporous and Mesoporous Materials. 279:26-36 |
| ISSN: | 1387-1811 |
| DOI: | 10.1016/j.micromeso.2018.12.018 |
| Popis: | Ti-based metal-organic frameworks (NH2-MIL-125) were post synthetic modified through a facile strategy using bis-quinoline Mannich bases producing MIL-125-HQ. The modified material (MIL-125-HQ) was used as an absorbent for uptake of the heavy metals from wastewater. 1H NMR, FTIR, CHN and SEM-EDX analysis showed successful incorporation of hydroxyl quinoline moiety into the NH2-MIL-125 upon chemical reaction. The modified MIL-125-HQ showed high affinity for Pb(II) ions from water, and the amount of Pb(II) ions decrease sharply from 500 mg/L to 60 mg/L, within merely 30 min of exposure at pH7, 298 K and 2 g/L MIL-125-HQ. The maximum adsorption capacity of MIL-125-HQ for Pb(II), Cd(II), Cu(II) and Cr(III) was determined to be 262.1, 102.8, 66.9 and 53.9 mg/g, respectively. |
| Databáze: | OpenAIRE |
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