Carbon-Nanotube-Based Superhydrophobic Magnetic Nanomaterial as Absorbent for Rapid and Efficient Oil/Water Separation
In this work, the simple fabrication of a new superhydrophobic magnetic sponge based on CNTs, NiFe<sub>2</sub>O<sub>4</sub> nanoparticles, and PDMS was investigated. CNTs were synthesized by chemical vapor deposition (CVD) on a nickel ferrite catalyst supported on aluminum ox...
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2024-12-01
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| author | Rabiga M. Kudaibergenova Fernanda F. Roman Adriano S. Silva Gulnar K. Sugurbekova |
| author_facet | Rabiga M. Kudaibergenova Fernanda F. Roman Adriano S. Silva Gulnar K. Sugurbekova |
| author_sort | Rabiga M. Kudaibergenova |
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| description | In this work, the simple fabrication of a new superhydrophobic magnetic sponge based on CNTs, NiFe<sub>2</sub>O<sub>4</sub> nanoparticles, and PDMS was investigated. CNTs were synthesized by chemical vapor deposition (CVD) on a nickel ferrite catalyst supported on aluminum oxide (NiFe<sub>2</sub>O<sub>4</sub>/Al<sub>2</sub>O<sub>3</sub>). The synthesis of nickel ferrite (NiFe) was accomplished using the sol–gel method, yielding magnetic nanoparticles (43 Am<sup>2</sup>kg<sup>−1</sup>, coercivity of 93 Oe, 21–29 nm). A new superhydrophobic magnetic PU/CNT/NiFe<sub>2</sub>O<sub>4</sub>/PDMS sponge was fabricated using a polyurethane (PU) sponge, CNTs, NiFe<sub>2</sub>O<sub>4</sub> nanoparticles, and polydimethylsiloxane (PDMS) through the immersion coating method. The new PU/CNT/NiFe<sub>2</sub>O<sub>4</sub>/PDMS sponge exhibits excellent superhydrophobic/oleophilic/mechanical properties and water repellency (water absorption rate of 0.4%) while having good absorption of oil, olive oil, and organic liquids of different densities (absorption capacity of 21.38 to 44.83 g/g), excellent separation efficiency (up to 99.81%), the ability to be reused for removing oil and organic solvents for more than 10 cycles, and easy control and separation from water using a magnet. The new PU/CNT/NiFe<sub>2</sub>O<sub>4</sub>/PDMS sponge is a promising candidate as a reusable sorbent for collecting oil and organic pollutants and can also be used as a hydrophobic filter due to its excellent mechanical properties. |
| format | Article |
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| issn | 2079-4991 |
| language | English |
| publishDate | 2024-12-01 |
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| series | Nanomaterials |
| spelling | doaj-art-e556661e30704fb1a58010111eaac6752025-08-20T01:55:37ZengMDPI AGNanomaterials2079-49912024-12-011423194210.3390/nano14231942Carbon-Nanotube-Based Superhydrophobic Magnetic Nanomaterial as Absorbent for Rapid and Efficient Oil/Water SeparationRabiga M. Kudaibergenova0Fernanda F. Roman1Adriano S. Silva2Gulnar K. Sugurbekova3Department of Chemistry and Chemical Technology, Faculty of Technology, M. Kh. Dulaty Taraz University, 60 Tole Bi Street, Taraz 080000, KazakhstanCIMO, LA SusTEC, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, PortugalCIMO, LA SusTEC, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, PortugalDepartment of Chemistry, Faculty of Natural Sciences, Eurasian National University Named after L.N. Gumilyov, Astana 010000, KazakhstanIn this work, the simple fabrication of a new superhydrophobic magnetic sponge based on CNTs, NiFe<sub>2</sub>O<sub>4</sub> nanoparticles, and PDMS was investigated. CNTs were synthesized by chemical vapor deposition (CVD) on a nickel ferrite catalyst supported on aluminum oxide (NiFe<sub>2</sub>O<sub>4</sub>/Al<sub>2</sub>O<sub>3</sub>). The synthesis of nickel ferrite (NiFe) was accomplished using the sol–gel method, yielding magnetic nanoparticles (43 Am<sup>2</sup>kg<sup>−1</sup>, coercivity of 93 Oe, 21–29 nm). A new superhydrophobic magnetic PU/CNT/NiFe<sub>2</sub>O<sub>4</sub>/PDMS sponge was fabricated using a polyurethane (PU) sponge, CNTs, NiFe<sub>2</sub>O<sub>4</sub> nanoparticles, and polydimethylsiloxane (PDMS) through the immersion coating method. The new PU/CNT/NiFe<sub>2</sub>O<sub>4</sub>/PDMS sponge exhibits excellent superhydrophobic/oleophilic/mechanical properties and water repellency (water absorption rate of 0.4%) while having good absorption of oil, olive oil, and organic liquids of different densities (absorption capacity of 21.38 to 44.83 g/g), excellent separation efficiency (up to 99.81%), the ability to be reused for removing oil and organic solvents for more than 10 cycles, and easy control and separation from water using a magnet. The new PU/CNT/NiFe<sub>2</sub>O<sub>4</sub>/PDMS sponge is a promising candidate as a reusable sorbent for collecting oil and organic pollutants and can also be used as a hydrophobic filter due to its excellent mechanical properties.https://www.mdpi.com/2079-4991/14/23/1942superhydrophobicmagneticpolyurethane spongeCNToil/water separation |
| spellingShingle | Rabiga M. Kudaibergenova Fernanda F. Roman Adriano S. Silva Gulnar K. Sugurbekova Carbon-Nanotube-Based Superhydrophobic Magnetic Nanomaterial as Absorbent for Rapid and Efficient Oil/Water Separation Nanomaterials superhydrophobic magnetic polyurethane sponge CNT oil/water separation |
| title | Carbon-Nanotube-Based Superhydrophobic Magnetic Nanomaterial as Absorbent for Rapid and Efficient Oil/Water Separation |
| title_full | Carbon-Nanotube-Based Superhydrophobic Magnetic Nanomaterial as Absorbent for Rapid and Efficient Oil/Water Separation |
| title_fullStr | Carbon-Nanotube-Based Superhydrophobic Magnetic Nanomaterial as Absorbent for Rapid and Efficient Oil/Water Separation |
| title_full_unstemmed | Carbon-Nanotube-Based Superhydrophobic Magnetic Nanomaterial as Absorbent for Rapid and Efficient Oil/Water Separation |
| title_short | Carbon-Nanotube-Based Superhydrophobic Magnetic Nanomaterial as Absorbent for Rapid and Efficient Oil/Water Separation |
| title_sort | carbon nanotube based superhydrophobic magnetic nanomaterial as absorbent for rapid and efficient oil water separation |
| topic | superhydrophobic magnetic polyurethane sponge CNT oil/water separation |
| url | https://www.mdpi.com/2079-4991/14/23/1942 |
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