Soeldner, Anika and Zach, Julia and Iwanow, Melanie and Gaertner, Tobias and Schlosser, Marc and Pfitzner, Arno and Koenig, Burkhard (2016) Preparation of Magnesium, Cobalt and Nickel Ferrite Nanoparticles from Metal Oxides using Deep Eutectic Solvents. CHEMISTRY-A EUROPEAN JOURNAL, 22 (37). pp. 13108-13113. ISSN 0947-6539, 1521-3765
Full text not available from this repository. (Request a copy)Abstract
Natural deep eutectic solvents (DESs) dissolve simple metal oxides and are used as a reaction medium to synthesize spinel-type ferrite nanoparticles MFe2O4 (M=Mg, Zn, Co, Ni). The best results for phase-pure spinel ferrites are obtained with the DES consisting of choline chloride (ChCl) and maleic acid. By employing DESs, the reactions proceed at much lower temperatures than usual for the respective solid-phase reactions of the metal oxides and at the same temperatures as synthesis with comparable calcination processes using metal salts. The method therefore reduces the overall required energy for the nanoparticle synthesis. Thermogravimetric analysis shows that the thermolysis process of the eutectic melts in air occurs in one major step. The phase-pure spinel-type ferrite particles are thoroughly characterized by X-ray diffraction, diffuse-reflectance UV/Vis spectroscopy, and scanning electron microscopy. The properties of the obtained nanoparticles are shown to be comparable to those obtained by other methods, illustrating the potential of natural DESs for processing metal oxides.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | UREA-SALT MIXTURES; MICROWAVE COMBUSTION METHOD; SPINEL-FERRITE; IONIC LIQUIDS; MAGNETIC-PROPERTIES; CHOLINE CHLORIDE; CO; MICROEMULSIONS; NANOCRYSTALS; EXTRACTION; ionic liquids; mixed metal oxides; nanoparticles; deep eutectic solvents |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Arno Pfitzner Chemistry and Pharmacy > Institut für Organische Chemie Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Burkhard König |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Mar 2019 09:39 |
| Last Modified: | 15 Mar 2019 09:39 |
| URI: | https://pred.uni-regensburg.de/id/eprint/3301 |
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