Potential applicability of Zn0.05TiOxNy@MOF-5 nanocomposite for adsorption and electrochemical detection of Zn(II) in saline wastewater
| Autor: | Tamer Awad Ali, Sherif A. Younis, Philippe Serp |
|---|---|
| Přispěvatelé: | Analysis and Evaluation Department, Egyptian Petroleum Research Institute, Egyptian Petroleum Research Institute (EPRI), Laboratoire de chimie de coordination (LCC), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut Français d’Egypte (IFE) - Science and Technology Development Fund (STDF) (IFE-STDF No. 26470) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Potentiometric titration
Inorganic chemistry Ionophore 02 engineering and technology 010402 general chemistry Zinc contaminated saline wastewater 01 natural sciences Endothermic process Adsorption studies Adsorption Modified screen-printed sensors Physisorption ZnTiO2-oxynitride Chemical Engineering (miscellaneous) [CHIM.COOR]Chemical Sciences/Coordination chemistry Potentiometric sensing Waste Management and Disposal Detection limit Nanocomposite Chemistry Process Chemistry and Technology 021001 nanoscience & nanotechnology Pollution 6. Clean water 0104 chemical sciences MOF-5 Selective adsorption 0210 nano-technology |
| Zdroj: | Journal of Environmental Chemical Engineering Journal of Environmental Chemical Engineering, Elsevier, 2021, 9 (5), pp.106186. ⟨10.1016/j.jece.2021.106186⟩ |
| ISSN: | 2213-3437 |
| Popis: | International audience; Recent developments in metal-organic frameworks (MOFs) have gained great interest in the potentiometric sensing and adsorption removal of heavy metals. However, poor hydrochemical stability is the major challenge limiting MOFs (e.g., MOF-5) applicability in the real environmental field. Accordingly, the impregnation of MOF-5 with Zn0.05TiOxNy nanoparticles was proposed in this work to design a hydrochemical stable Zn0.05TiOxNy@MOF-5 nanocomposite for selective/sensitive adsorption and potentiometric sensing of Zn2+ ions in saline wastewater containing 10–140 g L-1 total dissolved solids (TDS). The results indicate that Zn0.05TiOxNy@MOF-5 outperformed MOF-5 for Zn2+ adsorption over five reuse cycles, with an initial uptake rate (ho) of 11.724 g mg-1 min-1 at 50 g L-1 TDS. Based on the kinetic, isotherm, and thermodynamic data, the adsorption of Zn2+ onto Zn0.05TiOxNy@MOF-5 is an endothermic and physisorption in nature (ΔHº = −12.02 kJ/mol), including electrostatic interaction and diffusion mechanisms as the main rate-limiting step. The modified screen-printed sensor (SPS) with Zn0.05TiOxNy@MOF-5 ionophore also exhibits good selectivity for Zn2+ sensing (detection limit (DL) of 2.1 × 10-8 mol L-1 = 0.0014mg L-1) over a wide working range of 10-1 to 10-8 mol L-1 (Nernstian slope = 29.7 ± 0.3 mV decade-1) and pH 3–9. At optimum pH 5, the practical usability of SPS-based Zn0.05TiOxNy@MOF-5 for Zn2+ detection was also recognized in real petroleum and sewage wastewaters with stable potentiometric response over six successive days. These findings concluded that Zn0.05TiOxNy@MOF-5 could be used as a promising adsorbent and ionophore for selective adsorption and potentiometric detection of Zn2+ ions at a real environmental scale. |
| Databáze: | OpenAIRE |
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