Electrochemical, oxygen evolution reaction and photoelectrochemical water splitting activity of Ca-doped MgFe2O4 nanoparticles

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, Ca2+ doped MgFe2O4 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 Ca2+ 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 Ca2+ doped MgFe2O4 electrodes in 1 M KOH electrolytes. The Mg0.9Ca0.1Fe2O4 revealed a significant specific capacitance (SP) of 221.57 F g-1 at 0.33 A g(-1) current density (CD). Accordingly, Mg0.9Ca0.1Fe2O4 may be employed as a favorable electrode for super capacitor applications. The oxygen evolution reaction (OER) of Ca2+ doped MgFe2O4 electrodes was performed as electrocatalysts in 1 M KOH. The Mg1-xCaxFe2O4 (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. (C) 2022 Elsevier B.V. All rights reserved.

Automated summary

In this study, Ca2+-doped MgFe2O4 nanoparticles were synthesized and characterized as electrodes for supercapacitor and photoelectrochemical (PEC) water splitting applications. The results showed that Ca2+-doped MgFe2O4 nanoparticles exhibited high specific capacitance in 1 M KOH electrolyte, making them favorable electrodes for supercapacitor applications. Additionally, the Ca2+-doped MgFe2O4 nanoparticles were found to have potential as electrocatalysts for PEC water splitting.