Zn-MOFs/CNTs Composites: Fast and Effective Heavy Metal Ion Removal from Wastewater | ||||
| Egyptian Journal of Chemistry | ||||
| Volume 68, Issue 4, April 2025, Page 195-204 PDF (1.45 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2024.303465.10020 | ||||
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| Authors | ||||
Marwa S. Saleh1, 2, 3; Mohamed. O. Abdel-Salam4, 2, 3; Raed. M. Hegazey2, 3; Mona El-Sayed2, 3; Taeho Yoon5; Yaser. M. Moustafa2, 3; Mostafa M.H. Khalil   1
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| 1Chemistry Department, Faculty of Science, Ain Shams University, 11566 Abbassia, Cairo, Egypt. | ||||
| 2Analysis and Evaluation Department, Egyptian Petroleum Research Institute (EPRI), 1 Ahmed El Zomor st., Nasr City, Cairo, 11727, Egypt | ||||
| 3Central Analytical Laboratories, Nanotechnology Research, Egyptian Petroleum Research Institute (EPRI), 1 Ahmed El Zomor st., Nasr City, Cairo, 11727, Egypt | ||||
| 4Department of Chemistry, School of Science and Engineering, the American University in Cairo, Cairo, 11835, Egypt. | ||||
| 5Department of Chemical Engineering, Kyung Hee University, Yongin-si, Gye | ||||
| Abstract | ||||
| The subsistence of heavy metal ions, including Cu2+ and Pb2+, raises substantial concerns due to their potential toxicity to both the environment and human health. In this study, a novel adsorbent, the Metal-organic framework based on zinc (Zn-MOFs), incorporated with carbon nanotubes (CNTs), denoted as Zn-MOFs/CNTs, were synthesized using a room-temperature precipitation method for the efficient removal of heavy metals. The Zn-MOFs/CNTs composites were meticulously characterized using a range of analytical techniques such as Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (PXRD), field emission scanning electron microscopy (FE-SEM), and high-resolution transmission electron microscopy (HR-TEM). The effectiveness of Zn-MOFs/CNTs in removing Cu2+ and Pb2+ ions from water was assessed, considering adsorption time and initial ion concentration as key parameters. The results demonstrated the remarkable performance of Zn-MOFs/CNTs, achieving removal efficiencies exceeding 98% for Pb2+ and 93% for Cu2+ within a 12-minute timeframe. The maximum adsorption capacities determined (qm) by Langmuir isotherms were 1620 mg/g for Cu2+ and 1480 mg/g for Pb2+ at 303 K. The study concludes by providing recommendations and suggesting future directions for enhancing the application of MOFs-functionalized/CNTs in water treatment and reuse | ||||
| Keywords | ||||
| Metal-organic framework (MOFs); Wastewater treatment (Water remediation); CNTs; Heavy metals; Adsorption | ||||
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