Abstract
The transition mixed spinel ferrites (SFs) are the components used in the current modern technology and these include better elements whose ionic radii and oxidation state for exploring their electrochemical (EC) - photoelectrochemical (PEC) water splitting properties. In the current work, Ca 2+ - doped MgFe 2 O 4 NPs are synthesized and characterized by powder X-ray diffraction (XRD) and transmission electron microscopy (TEM) to examine the crystal structure and particle size. The EC characteristics such as cyclic voltammetry were used to perform the super capacitive (SC) behavior of Ca 2+ - doped MgFe 2 O 4 electrodes. The cyclic voltammetry measurements analysis confirmed the prepared electrode's EC activity behavior. The current study was performed to examine the EC behavior of Ca 2+ - doped MgFe 2 O 4 electrodes in 1 M KOH electrolytes. The Mg 0.9 Ca 0.1 Fe 2 O 4 revealed a significant specific capacitance (SP) of 221.57 F g −1 at 0.33 A g −1 current density (CD). Accordingly, Mg 0.9 Ca 0.1 Fe 2 O 4 may be employed as a favorable electrode for supercapacitor applications. The oxygen evolution reaction (OER) of Ca 2+ - doped MgFe 2 O 4 electrodes was performed as electrocatalysts in 1 M KOH. The Mg 1−x Ca x Fe 2 O 4 (x = 0.1, 0.3 & 0.5) NPs could be significant agents for PEC water splitting applications. The current study may lead to a new insight into the growth of a new class of mixed transition SFs for energy and environmental applications. • Electrochemical behavior of Ca 2+ doped MgFe 2 O 4 electrodes was performed in 1.0 M KOH electrolytes. • Oxygen evolution reaction of Ca 2+ doped MgFe 2 O 4 electrodes was performed as electrocatalysts in 1 M KOH. • The Mg 1−x Ca x Fe 2 O 4 (x = 0.1, 0.3 & 0.5) NPs could be significant agents for PEC water splitting applications. • Synthesized materials as promising electrodes and catalysts for energy storage and environmental remediation.
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