Amine-functionalized MOF-derived carbon materials for efficient removal of Congo red dye from aqueous solutions: simulation and adsorption studies
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Description
In this study, a novel polyethyleneimine (PEI) modified MOF-derived carbon adsorbent (PEI@MDC) was proposed, which exhibited significant adsorption capacity for Congo Red (CR) in aqueous solutions. FT-IR and XPS results showed that PEI was successfully grafted onto MDC, increasing the content of amine groups on the surface of MDC. The adsorption process conformed to the Langmuir isotherm adsorption model and pseudo-second-order kinetic equation, indicating that the adsorption of CR on PEI@MDC was covered by a single layer, and the adsorption process was controlled by chemical processes. According to the Langmuir model, the maximum adsorption capacity at 30 °C was 1723.86 mg g−1. Hydrogen bonding and electrostatic interactions between CR and PEI@MDC surface functional groups were the main mechanisms controlling the adsorption process. After five adsorption-desorption cycles, PEI@MDC still showed a high adsorption capacity for CR, indicating that the adsorbent had an excellent regeneration ability.
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| ID Code: | 237141 |
|---|---|
| Item Type: | Contribution to Journal (Journal Article) |
| Refereed: | Yes |
| Additional Information: | Funding Information: This financial support from the National Key R&D Program of China (2021YFE0114400), the Research program of Agriculture Research System of China (CARS-17), and the Natural Science Foundation of China (32160570) were acknowledged. |
| Measurements or Duration: | 13 pages |
| DOI: | 10.1039/d2ra06513d |
| ISSN: | 2046-2069 |
| Pure ID: | 122365458 |
| Divisions: | Current > Research Centres > Centre for Agriculture and the Bioeconomy Current > QUT Faculties and Divisions > Faculty of Science Current > QUT Faculties and Divisions > Faculty of Engineering Current > Schools > School of Mechanical, Medical & Process Engineering |
| Funding Information: | This financial support from the National Key R&D Program of China (2021YFE0114400), the Research program of Agriculture Research System of China (CARS-17), and the Natural Science Foundation of China (32160570) were acknowledged. |
| Copyright Owner: | 2023 The Royal Society of Chemistry |
| Copyright Statement: | This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au |
| Deposited On: | 23 Jan 2023 04:10 |
| Last Modified: | 03 Aug 2024 17:29 |
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