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Highly efficient fluoride removal from water using 2D metal-organic frameworks MIL-53(Al) with rich Al and O adsorptive centers.
| Content Provider | Europe PMC |
|---|---|
| Author | Huang, Lei Yang, Zhihui Alhassan, Sikpaam Issaka Luo, Zhixuan Song, Baocheng Jin, Linfeng Zhao, Yixian Wang, Haiying |
| Copyright Year | 2021 |
| Description | In this study, metal-organic framework MIL-53(Al) was synthesized and studied to understand the different mechanisms between normal MIL-53(Al) and 2D metal-organic framework MIL-53(Al) for removing fluoride. Comparatively, the 2D MIL-53(Al) had two-dimensional linear morphology rather than block shape, indicating more expose adsorptive sites than normal MIL-53(Al). The batch adsorption experiments were applied to investigate the performance of 2D MIL-53(Al), including pH, adsorption kinetics, and thermodynamics. The 2D MIL-53(Al) (75.50 mg/g) showed better adsorption capacity than normal MIL-53(Al) (35.63 mg/g). The adsorption process of 2D MIL-53(Al) followed the pseudo-first-order model and Langmuir model. The adsorption mechanism of this material was further studied by using experimental characterization and density functional theory calculations in detail. The main adsorptive sites were Al and O in the 2D MIL-53(Al), and the relationship between fluoride binding with Al and O was HF2− > HF > F−. The species of fluoride were HF2−, HF, F at different pH and concentrations. Hence, this study provides a significant way on the application of two-dimensional materials for removing fluoride. Highlights • 2D MIL-53(Al) was prepared by using the solvothermal method. • 2D MIL-53(Al) was exposed to enhance the adsorption of fluoride. • 2D MIL-53(Al) had good adsorptive performance at a wide range of pH. • DFT calculation and experiments were investigated for removing fluoride. |
| Related Links | https://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC9488010&blobtype=pdf |
| ISSN | 20969643 |
| Volume Number | 8 |
| DOI | 10.1016/j.ese.2021.100123 |
| PubMed Central reference number | PMC9488010 |
| PubMed reference number | 36156989 |
| Journal | Environmental Science and Ecotechnology [Environ Sci Ecotechnol] |
| e-ISSN | 26664984 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2021-09-11 |
| Access Restriction | Open |
| Rights License | This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). © 2021 The Author(s) |
| Subject Keyword | Two dimensions Metal-organic frameworks MIL-53(Al) Fluoride Adsorption |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology Environmental Engineering Environmental Science |
