Iron mediated cathodic electrosynthesis of hausmannite nanoparticles |
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| Affiliation: | 1. School of Physics and Accelerators, NSTRI, PO Box 11365-8486, Tehran, Iran;2. Faculty of Chemistry, Shahid Beheshti University, G.C., 1983963113, Evin, Tehran, Iran;3. NFCRS, Nuclear Science and Technology Research Institute, PO Box 11365/8486, Tehran, Iran;4. Department of Materials Engineering, NaghsheJahan Institute of Higher Education, Baharestan, Isfahan, Iran;1. Laboratory for Developing New Materials and Their Characterizations, University of Setif, Algeria;2. Department of Physics, Faculty of Sciences, University of Biskra, Algeria;1. Zavoisky Kazan Physical-Technical Institute, Sibirsky Tract 10/7, 420029 Kazan, Russia;2. Institute of Solution Chemistry, Akademicheskaya St. 1, 153045 Ivanovo, Russia;3. Kazan Federal University, Kremlyovskaya St. 18, 420008 Kazan, Russia;1. Duzce University Gumusova Vocational School, Department of Metallurgy, Gumusova, 81850 Duzce, Turkey;2. Sakarya University, Department of Metallurgy & Materials Engineering, 54187 Sakarya, Turkey;1. Physics Department, College of Sciences, Shiraz University, Shiraz 71946-84795, Iran;2. Institute of Nanotechnology, Shiraz University, Shiraz 71454, Iran;3. Department of Physics, Condensed Matter Lab, Shahid Chamran University, Ahvaz, Iran;1. Centre of Innovative Nanostructures & Nanodevices, Malaysia;2. Electrical & Electronic Engineering Department, Malaysia;3. Fundamental & Applied Sciences Department Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar Perak, Malaysia |
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| Abstract: | A novel synthetic route has been proposed to prepare hausmannite nanoparticles. The synthetic route comprises an iron mediated constant current cathodic electrodeposition of manganite and heat treatment of the latter to obtain hausmannite. The obtained nanostructures have been characterized using X-ray Diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDX) and Fourier transform Infrared Spectrometry (FTIR). The role of iron in the formation of manganite precursor has been studied by cyclic voltammetry (CV) and differential thermal analysis (DTA). A formation mechanism based on iron mediated formation of Mn3+ and subsequent cathodic reduction of the disproportionated products has been proposed accordingly. The prepared nanoparticles exhibited specific capacitance of 143 F g?1 in 0.5 M Na2SO4 solution. The retained specific capacity was 87% after 2000 cycles. |
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| Keywords: | Hausmannite Manganite: electro synthesis Nanoparticles Energy storage |
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