Magnetic Nanocomposites of Coated Ferrites/MOF as Pesticide Adsorbents
Magnetic metal–organic frameworks (MMOFs) are gaining increased attention as emerging adsorbents/water remediation agents. Herein, a facile development of novel MMOFs comprised of coated ferrite nanoparticles (MNPs) and UiO-66 metal–organic framework is reported. In specific, coated Co- and Zn-doped...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/1/39 |
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| author | Savvina Lazarou Orestis Antonoglou Stefanos Mourdikoudis Marco Serra Zdeněk Sofer Catherine Dendrinou-Samara |
| author_facet | Savvina Lazarou Orestis Antonoglou Stefanos Mourdikoudis Marco Serra Zdeněk Sofer Catherine Dendrinou-Samara |
| author_sort | Savvina Lazarou |
| collection | DOAJ |
| description | Magnetic metal–organic frameworks (MMOFs) are gaining increased attention as emerging adsorbents/water remediation agents. Herein, a facile development of novel MMOFs comprised of coated ferrite nanoparticles (MNPs) and UiO-66 metal–organic framework is reported. In specific, coated Co- and Zn-doped ferrite magnetic nanoparticles were synthesized as building block while the metal–organic framework was grown in the presence of MNPs via a semi-self-assembly approach. The utilization of coated MNPs facilitated the conjugation and stands as a novel strategy for fabricating MMOFs with increased stability and an explicit structure. MMOFs were isolated with 13–25 nm crystallites sizes, 244–332 m<sup>2</sup>/g specific surface area (SSA) and 22–42 emu/g saturation magnetization values. Establishing the UiO-66 framework via the reported semi-self-assembly resulted in roughly 70% reduction in both magnetic properties and SSA, compared with the initial MNPs building blocks and UiO-66 framework, respectively. Nonetheless, the remaining 30% of the magnetization and SSA was adequate for successful and sufficient adsorption of two different pesticides, 2,4-Dichlorophenoxyacetic acid (2,4-D) and 2,4,5-Trichlorophenoxyacetic acid (2,4,5-T), while the recovery with a commercial magnet and reuse were also found to be effective. Adsorption and kinetic studies for all three MMOFs and both pesticides were performed, and data were fitted to Langmuir–Freundlich isotherm models. |
| first_indexed | 2024-03-09T12:07:52Z |
| format | Article |
| id | doaj.art-9a547efd17b74674b74d41d500fa7a26 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T12:07:52Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-9a547efd17b74674b74d41d500fa7a262023-11-30T22:56:09ZengMDPI AGMolecules1420-30492022-12-012813910.3390/molecules28010039Magnetic Nanocomposites of Coated Ferrites/MOF as Pesticide AdsorbentsSavvina Lazarou0Orestis Antonoglou1Stefanos Mourdikoudis2Marco Serra3Zdeněk Sofer4Catherine Dendrinou-Samara5Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceLaboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceDepartment of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech RepublicDepartment of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech RepublicDepartment of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech RepublicLaboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceMagnetic metal–organic frameworks (MMOFs) are gaining increased attention as emerging adsorbents/water remediation agents. Herein, a facile development of novel MMOFs comprised of coated ferrite nanoparticles (MNPs) and UiO-66 metal–organic framework is reported. In specific, coated Co- and Zn-doped ferrite magnetic nanoparticles were synthesized as building block while the metal–organic framework was grown in the presence of MNPs via a semi-self-assembly approach. The utilization of coated MNPs facilitated the conjugation and stands as a novel strategy for fabricating MMOFs with increased stability and an explicit structure. MMOFs were isolated with 13–25 nm crystallites sizes, 244–332 m<sup>2</sup>/g specific surface area (SSA) and 22–42 emu/g saturation magnetization values. Establishing the UiO-66 framework via the reported semi-self-assembly resulted in roughly 70% reduction in both magnetic properties and SSA, compared with the initial MNPs building blocks and UiO-66 framework, respectively. Nonetheless, the remaining 30% of the magnetization and SSA was adequate for successful and sufficient adsorption of two different pesticides, 2,4-Dichlorophenoxyacetic acid (2,4-D) and 2,4,5-Trichlorophenoxyacetic acid (2,4,5-T), while the recovery with a commercial magnet and reuse were also found to be effective. Adsorption and kinetic studies for all three MMOFs and both pesticides were performed, and data were fitted to Langmuir–Freundlich isotherm models.https://www.mdpi.com/1420-3049/28/1/39nanoadsorbentsmagnetic nanomaterialsmagnetic metal–organic frameworksUiO-66water remediationpesticides |
| spellingShingle | Savvina Lazarou Orestis Antonoglou Stefanos Mourdikoudis Marco Serra Zdeněk Sofer Catherine Dendrinou-Samara Magnetic Nanocomposites of Coated Ferrites/MOF as Pesticide Adsorbents Molecules nanoadsorbents magnetic nanomaterials magnetic metal–organic frameworks UiO-66 water remediation pesticides |
| title | Magnetic Nanocomposites of Coated Ferrites/MOF as Pesticide Adsorbents |
| title_full | Magnetic Nanocomposites of Coated Ferrites/MOF as Pesticide Adsorbents |
| title_fullStr | Magnetic Nanocomposites of Coated Ferrites/MOF as Pesticide Adsorbents |
| title_full_unstemmed | Magnetic Nanocomposites of Coated Ferrites/MOF as Pesticide Adsorbents |
| title_short | Magnetic Nanocomposites of Coated Ferrites/MOF as Pesticide Adsorbents |
| title_sort | magnetic nanocomposites of coated ferrites mof as pesticide adsorbents |
| topic | nanoadsorbents magnetic nanomaterials magnetic metal–organic frameworks UiO-66 water remediation pesticides |
| url | https://www.mdpi.com/1420-3049/28/1/39 |
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