Mechanochemical Synthesis and Electrochemical Characterization of Nano Crystalline Calcium Ferrite View Full Text


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Article Info

DATE

2011-06-08

AUTHORS

L. John Berchmans, R. Karthikeyan, M. Helan, Sheela Berchmans, V. Ŝepelak, K. D. Becker

ABSTRACT

The studies on the mechanochemical synthesis and electrochemical characterization of orthorhombic calcium ferrite (CaFe2O4) are reported in this paper. Stoichiometric mixtures of α-Fe2O3 and granulated Ca metal were used as the starting materials for the synthesis process. The synthesized calcium ferrite was characterized by room-temperature Mössbauer spectra, XRD and TEM. The electrochemical characterisation was carried out using cyclic voltammetry studies. Mössbauer spectra provide the yield of the reaction, information on the charge status, the local symmetry and the magnetic state of the iron ions in the mechanosynthesized ferrite material. XRD analysis of the CaFe2O4 compound reveals the orthorhombic crystal structure with an average crystalline size of about 28 nm. TEM micrographs reveal the nanoparticles with irregular crystal morphology ranging from 8 to 30 nm. The electrochemical studies clearly show that the calcium ferrite compound can act as an electrocatalyst for Oxygen Evolution Reaction (OER).Graphical AbstractThe studies on the mechanochemical synthesis and electrochemical characterization of orthorhombic calcium ferrite (CaFe2O4) are reported in this paper. The electrochemical studies clearly show that the calcium ferrite compound can act as an electrocatalyst for Oxygen Evolution Reaction (OER). More... »

PAGES

1451-1457

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10562-011-0636-9

DOI

http://dx.doi.org/10.1007/s10562-011-0636-9

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1047104839


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