Microwave-Assisted Solvothermal Synthesis of Nanocrystallite-Derived Magnetite Spheres
The synthesis of magnetic particles triggers the interest of many scientists due to their relevant properties and wide range of applications in the catalysis, nanomedicine, biosensing and magnetic separation fields. A fast synthesis of iron oxide magnetic particles using an eco-friendly and facile m...
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2022-06-01
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| author | Greta Zambzickaite Martynas Talaikis Jorunas Dobilas Voitech Stankevic Audrius Drabavicius Gediminas Niaura Lina Mikoliunaite |
| author_facet | Greta Zambzickaite Martynas Talaikis Jorunas Dobilas Voitech Stankevic Audrius Drabavicius Gediminas Niaura Lina Mikoliunaite |
| author_sort | Greta Zambzickaite |
| collection | DOAJ |
| description | The synthesis of magnetic particles triggers the interest of many scientists due to their relevant properties and wide range of applications in the catalysis, nanomedicine, biosensing and magnetic separation fields. A fast synthesis of iron oxide magnetic particles using an eco-friendly and facile microwave-assisted solvothermal method is presented in this study. Submicron Fe<sub>3</sub>O<sub>4</sub> spheres were prepared using FeCl<sub>3</sub> as an iron source, ethylene glycol as a solvent and reductor and sodium acetate as a precipitating and nucleating agent. The influence of the presence of polyethylene glycol as an additional reductor and heat absorbent was also evaluated. We reduce the synthesis time to 1 min by increasing the reaction temperature using the microwave-assisted solvothermal synthesis method under pressure or by adding PEG at lower temperatures. The obtained magnetite spheres are 200–300 nm in size and are composed of 10–30 nm sized crystallites. The synthesized particles were investigated using the XRD, TGA, pulsed-field magnetometry, Raman and FTIR methods. It was determined that adding PEG results in spheres with mixed magnetite and maghemite compositions, and the synthesis time increases the size of the crystallites. The presented results provide insights into the microwave-assisted solvothermal synthesis method and ensure a fast route to obtaining spherical magnetic particles composed of different sized nanocrystallites. |
| first_indexed | 2024-03-10T01:07:20Z |
| format | Article |
| id | doaj.art-5aecaea276b74b489bf49d620142dc87 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T01:07:20Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-5aecaea276b74b489bf49d620142dc872023-11-23T14:24:00ZengMDPI AGMaterials1996-19442022-06-011511400810.3390/ma15114008Microwave-Assisted Solvothermal Synthesis of Nanocrystallite-Derived Magnetite SpheresGreta Zambzickaite0Martynas Talaikis1Jorunas Dobilas2Voitech Stankevic3Audrius Drabavicius4Gediminas Niaura5Lina Mikoliunaite6Department of Organic Chemistry, Center for Physical Sciences and Technology (FTMC), Sauletekio al. 3, 10257 Vilnius, LithuaniaDepartment of Organic Chemistry, Center for Physical Sciences and Technology (FTMC), Sauletekio al. 3, 10257 Vilnius, LithuaniaDepartment of Functional Materials and Electronics, Center for Physical Sciences and Technology (FTMC), Sauletekio al. 3, 10257 Vilnius, LithuaniaDepartment of Functional Materials and Electronics, Center for Physical Sciences and Technology (FTMC), Sauletekio al. 3, 10257 Vilnius, LithuaniaDepartment of Characterization of Materials Structure, Center for Physical Sciences and Technology (FTMC), Sauletekio al. 3, 10257 Vilnius, LithuaniaDepartment of Organic Chemistry, Center for Physical Sciences and Technology (FTMC), Sauletekio al. 3, 10257 Vilnius, LithuaniaDepartment of Organic Chemistry, Center for Physical Sciences and Technology (FTMC), Sauletekio al. 3, 10257 Vilnius, LithuaniaThe synthesis of magnetic particles triggers the interest of many scientists due to their relevant properties and wide range of applications in the catalysis, nanomedicine, biosensing and magnetic separation fields. A fast synthesis of iron oxide magnetic particles using an eco-friendly and facile microwave-assisted solvothermal method is presented in this study. Submicron Fe<sub>3</sub>O<sub>4</sub> spheres were prepared using FeCl<sub>3</sub> as an iron source, ethylene glycol as a solvent and reductor and sodium acetate as a precipitating and nucleating agent. The influence of the presence of polyethylene glycol as an additional reductor and heat absorbent was also evaluated. We reduce the synthesis time to 1 min by increasing the reaction temperature using the microwave-assisted solvothermal synthesis method under pressure or by adding PEG at lower temperatures. The obtained magnetite spheres are 200–300 nm in size and are composed of 10–30 nm sized crystallites. The synthesized particles were investigated using the XRD, TGA, pulsed-field magnetometry, Raman and FTIR methods. It was determined that adding PEG results in spheres with mixed magnetite and maghemite compositions, and the synthesis time increases the size of the crystallites. The presented results provide insights into the microwave-assisted solvothermal synthesis method and ensure a fast route to obtaining spherical magnetic particles composed of different sized nanocrystallites.https://www.mdpi.com/1996-1944/15/11/4008magnetiteFe<sub>3</sub>O<sub>4</sub>microwave-assisted solvothermal method |
| spellingShingle | Greta Zambzickaite Martynas Talaikis Jorunas Dobilas Voitech Stankevic Audrius Drabavicius Gediminas Niaura Lina Mikoliunaite Microwave-Assisted Solvothermal Synthesis of Nanocrystallite-Derived Magnetite Spheres Materials magnetite Fe<sub>3</sub>O<sub>4</sub> microwave-assisted solvothermal method |
| title | Microwave-Assisted Solvothermal Synthesis of Nanocrystallite-Derived Magnetite Spheres |
| title_full | Microwave-Assisted Solvothermal Synthesis of Nanocrystallite-Derived Magnetite Spheres |
| title_fullStr | Microwave-Assisted Solvothermal Synthesis of Nanocrystallite-Derived Magnetite Spheres |
| title_full_unstemmed | Microwave-Assisted Solvothermal Synthesis of Nanocrystallite-Derived Magnetite Spheres |
| title_short | Microwave-Assisted Solvothermal Synthesis of Nanocrystallite-Derived Magnetite Spheres |
| title_sort | microwave assisted solvothermal synthesis of nanocrystallite derived magnetite spheres |
| topic | magnetite Fe<sub>3</sub>O<sub>4</sub> microwave-assisted solvothermal method |
| url | https://www.mdpi.com/1996-1944/15/11/4008 |
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