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Experimental and Monte Carlo simulation study on a core–shell NiFe2O4@HKUST-1/graphene oxide nanocomposite for Congo Red adsorption
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Maryam Haddadi,
Faranak Manteghi ,
Rahime Eshaghi Malekshah,
Zari Tehrani
RSC Advances, Volume: 15, Issue: 27, Pages: 21240 - 21256
Swansea University Author:
Zari Tehrani
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DOI (Published version): 10.1039/d5ra02381e
Abstract
A copper-based metal–organic framework, nickel ferrite and graphene oxide were prepared as constituents of a new core–shell nanocomposite formed by a layer-by-layer method, then it was applied to absorb Congo Red dye as an organic contaminant. The nanocomposite was studied by XRD, FTIR, EDS, FESEM a...
| Published in: | RSC Advances |
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| ISSN: | 2046-2069 |
| Published: |
The Royal Society of Chemistry
2025
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa69865 |
| Abstract: |
A copper-based metal–organic framework, nickel ferrite and graphene oxide were prepared as constituents of a new core–shell nanocomposite formed by a layer-by-layer method, then it was applied to absorb Congo Red dye as an organic contaminant. The nanocomposite was studied by XRD, FTIR, EDS, FESEM and VSM methods. Investigating the main factors affecting the adsorption shows that the optimum pH of the dye solution is 7, the best contact time is 60 min with an initial solution concentration of 5 ppm and 0.05 g of adsorbent is the optimum amount. Adaptation of Langmuir, Freundlich, Temkin and Dubinin–Radushkevich adsorption isotherms showed that the dye adsorption process is consistent with two first isotherm models. Regarding the adsorption kinetics and according to the calculations, it was found that the adsorption process follows second-order kinetics. The composite NiFe2O4@HKUST-1/GO demonstrated a maximum adsorption capacity of 25.64 mg g−1 for Congo Red dye removal from aqueous solutions. Monte Carlo simulations were used to simulate the adsorption nature between NiFe2O4 (311) molecules and the HKUST-1 surface, GO molecules and NiFe2O4@HKUST-1, and CR and NiFe2O4@HKUST-1/GO. |
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| College: |
Faculty of Science and Engineering |
| Funders: |
The authors gratefully acknowledge the financial support of this work from Iran University of Science and Technology, and the joint-financial support from Welsh Government and European Commission under European Regional Development Funds (ERDF) through SêrCymru II Fellowships (project number: 80761-su-100) at Swansea University. |
| Issue: |
27 |
| Start Page: |
21240 |
| End Page: |
21256 |