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Firmino HCT, Nascimento EP, Arzuza LCC, Araujo RN, Sousa BV, Neves GA, Morales MA, Menezes RR. High-Efficiency Adsorption Removal of Congo Red Dye from Water Using Magnetic NiFe 2O 4 Nanofibers: An Efficient Adsorbent. MATERIALS (BASEL, SWITZERLAND) 2025; 18:754. [PMID: 40004277 PMCID: PMC11857305 DOI: 10.3390/ma18040754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2024] [Revised: 01/30/2025] [Accepted: 02/06/2025] [Indexed: 02/27/2025]
Abstract
The pollution caused by organic dyes in water bodies has become a major environmental issue, and removing such pernicious dyes presents an immense challenge for the scientific community and governments. In this study, a sorbent based on nickel ferrite (NiFe2O4) fibers was fabricated by the solution blow spinning (SBS) method for the adsorptive removal of anionic Cong red (CR) dye. The cubic-spinel structure and the magnetic and porous nature of NiFe2O4 were confirmed by XRD, magnetometry, BET, and SEM analyses. The saturation magnetization confirmed the magnetic nature of the fibers, which favorably respond to an external magnetic field, facilitating separation from a treated solution. The sorption kinetics of CR on NiFe2O4 were best described by the pseudo-second-order model, while sorption equilibrium agreed best with the Freundlich, Langmuir, Sips, and Temkin isotherm models, suggesting a complex mechanism involving chemisorption, monolayer coverage, and heterogeneous adsorption. The NiFe2O4 fibers annealed at 500 °C showed a high CR removal efficiency of ~97% after only 30 min. The sorbent's porous structure and high specific surface area were responsible for the improved removal efficiency. Finally, the results indicated the potential of the NiFe2O4 fibers in the remediation of water contaminated with Congo red dye.
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Affiliation(s)
- Hellen C. T. Firmino
- Laboratory of Materials Technology (LTM), Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil; (E.P.N.); (L.C.C.A.); (R.N.A.); (G.A.N.)
| | - Emanuel P. Nascimento
- Laboratory of Materials Technology (LTM), Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil; (E.P.N.); (L.C.C.A.); (R.N.A.); (G.A.N.)
| | - Luis C. C. Arzuza
- Laboratory of Materials Technology (LTM), Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil; (E.P.N.); (L.C.C.A.); (R.N.A.); (G.A.N.)
| | - Rondinele N. Araujo
- Laboratory of Materials Technology (LTM), Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil; (E.P.N.); (L.C.C.A.); (R.N.A.); (G.A.N.)
- Graduate Program in Materials Science and Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil
| | - Bianca V. Sousa
- Department of Chemical Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil;
| | - Gelmires A. Neves
- Laboratory of Materials Technology (LTM), Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil; (E.P.N.); (L.C.C.A.); (R.N.A.); (G.A.N.)
| | - Marco A. Morales
- Department of Theoretical and Experimental Physics, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil;
| | - Romualdo R. Menezes
- Laboratory of Materials Technology (LTM), Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil; (E.P.N.); (L.C.C.A.); (R.N.A.); (G.A.N.)
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Nayl AA, Abd-Elhamid AI, Arafa WAA, Ahmed IM, AbdEl-Rahman AME, Soliman HMA, Abdelgawad MA, Ali HM, Aly AA, Bräse S. A Novel P@SiO 2 Nano-Composite as Effective Adsorbent to Remove Methylene Blue Dye from Aqueous Media. MATERIALS (BASEL, SWITZERLAND) 2023; 16:514. [PMID: 36676250 PMCID: PMC9864475 DOI: 10.3390/ma16020514] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/23/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023]
Abstract
This work aims to prepare a novel phosphate-embedded silica nanoparticles (P@SiO2) nanocomposite as an effective adsorbent through a hydrothermal route. Firstly, a mixed solution of sodium silicate and sodium phosphate was passed through a strong acidic resin to convert it into hydrogen form. After that, the resultant solution was hydrothermally treated to yield P@SiO2 nanocomposite. Using kinetic studies, methylene blue (MB) dye was selected to study the removal behavior of the P@SiO2 nanocomposite. The obtained composite was characterized using several advanced techniques. The experimental results showed rapid kinetic adsorption where the equilibrium was reached within 100 s, and the pseudo-second-order fitted well with experimental data. Moreover, according to Langmuir, one gram of P@SiO2 nanocomposite can remove 76.92 mg of the methylene blue dye. The thermodynamic studies showed that the adsorption process was spontaneous, exothermic, and ordered at the solid/solution interface. Finally, the results indicated that the presence of NaCl did not impact the adsorption behavior of MB dye. Due to the significant efficiency and promising properties of the prepared P@SiO2 nanocomposite, it could be used as an effective adsorbent material to remove various cationic forms of pollutants from aqueous solutions in future works.
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Affiliation(s)
- AbdElAziz A. Nayl
- Department of Chemistry, College of Science, Jouf University, Sakaka 72341, Aljouf, Saudi Arabia
| | - Ahmed I. Abd-Elhamid
- Composites and Nanostructured Materials Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg Al-Arab 21934, Egypt
| | - Wael A. A. Arafa
- Department of Chemistry, College of Science, Jouf University, Sakaka 72341, Aljouf, Saudi Arabia
| | - Ismail M. Ahmed
- Department of Chemistry, College of Science, Jouf University, Sakaka 72341, Aljouf, Saudi Arabia
| | - Aref M. E. AbdEl-Rahman
- Composites and Nanostructured Materials Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg Al-Arab 21934, Egypt
| | - Hesham M. A. Soliman
- Composites and Nanostructured Materials Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg Al-Arab 21934, Egypt
| | - Mohamed A. Abdelgawad
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University, Sakaka 72341, Aljouf, Saudi Arabia
| | - Hazim M. Ali
- Department of Chemistry, College of Science, Jouf University, Sakaka 72341, Aljouf, Saudi Arabia
| | - Ashraf A. Aly
- Chemistry Department, Faculty of Science, Organic Division, Minia University, El-Minia 61519, Egypt
| | - Stefan Bräse
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76133 Karlsruhe, Germany
- Institute of Biological and Chemical Systems-Functional Molecular Systems (IBCS-FMS), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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