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URN to cite this document: urn:nbn:de:bvb:703-epub-6165-8
Title data
Simon, Christopher ; Zakaria, Mohamed Barakat ; Kurz, Hannah ; Tetzlaff, David ; Blößer, André ; Weiß, Morten ; Timm, Jana ; Weber, Birgit ; Apfel, Ulf-Peter ; Marschall, Roland:
Magnetic NiFe₂O₄ Nanoparticles Prepared via Non-Aqueous Microwave-Assisted Synthesis for Application in Electrocatalytic Water Oxidation.
In: Chemistry : a European Journal.
Vol. 27
(2021)
Issue 68
.
- pp. 16990-17001.
ISSN 1521-3765
DOI der Verlagsversion: https://doi.org/10.1002/chem.202101716
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Abstract
Phase-pure spinel-type magnetic nickel ferrite (NiFe₂O₄) nanocrystals in the size range of 4 to 11 nm were successfully synthesized by a fast and energy-saving microwave-assisted approach. Size and accessible surface areas can be tuned precisely by the reaction parameters. Our results highlight the correlation between size, degree of inversion, and magnetic characteristics of NiFe₂O₄ nanoparticles, which enables fine-tuning of these parameters for a particular application without changing the elemental composition. Moreover, the application potential of the synthesized powders for the electrocatalytic oxygen evolution reaction in alkaline media was demonstrated, showing that a low degree of inversion is beneficial for the overall performance. The most active sample reaches an overpotential of 380 mV for water oxidation at 10 mA cm−2 and 38.8 mA cm−2 at 1.7 V vs. RHE, combined with a low Tafel slope of 63 mV dec−1.
Further data
| Item Type: | Article in a journal |
|---|---|
| Keywords: | degree of inversion; microwave synthesis; nanoparticles; oxygen evolution reaction; spinelferrites |
| DDC Subjects: | 500 Science > 540 Chemistry |
| Institutions of the University: | Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Inorganic Chemistry IV - Univ.-Prof. Dr. Birgit Weber Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry IV Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors |
| Language: | English |
| Originates at UBT: | Yes |
| URN: | urn:nbn:de:bvb:703-epub-6165-8 |
| Date Deposited: | 28 Apr 2022 09:25 |
| Last Modified: | 28 Apr 2022 09:25 |
| URI: | https://epub.uni-bayreuth.de/id/eprint/6165 |
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