Abstract
The influence of processing parameters on the physicochemical properties of hematite α-Fe2O3 nanostructures was investigated. X-ray diffraction results revealed the hematite phase rhombohedral structure. Scanning electron microscope results explored nanospheres, nanohexagonal platelets, nanoellipsoids, distorted nanocubes, and interconnected platelets nanostructures. Rhombohedral single-phase hematite was confirmed through five Raman active modes. 2P 3/2 (1) → 2P 1/2 transition in photoluminescence spectra and Fourier-transform infrared spectroscopy band observed at ~ 555 cm−1 revealed the hematite formation. The highest specific capacitance value of 151.09 F/g for scan rate of 10 mV/s was obtained for the hydrothermal-assisted product using an Fe(NO3)2·9H2O precursor in KOH electrolyte solutions.
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Funding was provided by UGC Start Up Grant (Grant No. F.30-326/2016(BSR)).
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Jansi Rani, B., Mageswari, R., Ravi, G. et al. Design, Fabrication, and Characterization of Hematite (α-Fe2O3) Nanostructures. JOM 69, 2508–2514 (2017). https://doi.org/10.1007/s11837-017-2588-z
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DOI: https://doi.org/10.1007/s11837-017-2588-z