Supramolecular Hybrid Material Based on Engineering Porphyrin Hosts for an Efficient Elimination of Lead(II) from Aquatic Medium
| Autor: | Nuno M. M. Moura, M. Graça P. M. S. Neves, Chahrazad El Abiad, Smaail Radi, Maria A. F. Faustino |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Porphyrins
Inorganic chemistry Supramolecular chemistry Pharmaceutical Science porphyrinoids Article Water Purification Analytical Chemistry lcsh:QD241-441 Metal chemistry.chemical_compound Adsorption lcsh:Organic chemistry Metals Heavy Drug Discovery Humans Molecule Thermal stability heavy metal cation Physical and Theoretical Chemistry Ions lead Organic Chemistry selectivity Water hybrid material Hydrogen-Ion Concentration Silicon Dioxide Porphyrin Kinetics chemistry Chemistry (miscellaneous) adsorption visual_art visual_art.visual_art_medium Molecular Medicine Hybrid material Selectivity Copper Water Pollutants Chemical Cadmium |
| Zdroj: | Molecules Volume 24 Issue 4 Molecules, Vol 24, Iss 4, p 669 (2019) |
| ISSN: | 1420-3049 |
| DOI: | 10.3390/molecules24040669 |
| Popis: | Porphyrins show great promise for future purification demands. This is largely due to their unique features as host binding molecules that can be modified at the synthetic level, and largely improved by their incorporation into inorganic based materials. In this study, we assessed the efficacy of a hybrid material obtained from the immobilization of 5,10,15,20-tetrakis(pentafluorophenyl)-porphyrin on silica surface to remove Pb(II), Cu(II), Cd(II), and Zn(II) ions from water. The new organic-inorganic hybrid adsorbent was fully characterized by adequate techniques and the results show that the hybrid exhibits good chemical and thermal stability. From batch assays, it was evaluated how the efficacy of the hybrid was affected by the pH, contact time, initial metal concentration, and temperature. The adsorption kinetic and isotherms showed to fit the recent developed fractal-like pseudo-second-order model and Langmuir&ndash Freundlich model respectively. The highest adsorption capacities for Pb(II), Cu(II), Cd(II), and Zn(II) ions were 187.36, 125.17, 82.45, and 56.23 mg g&minus 1, respectively, at pH 6.0 and 25 ° C. This study also shows that metal cations from real river water samples can be efficient removed in the presence of the new adsorbent material. |
| Databáze: | OpenAIRE |
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