Synthesis, Characterization, and Electrocatalytic Properties of PrMn0.5M0.5O3 (M = Cr, Fe, Co, Ni) Perovskites
Besarta Cheliku Ramadani, Jeta Sela, Leon Stojanov, Sofija Popovska, Valentin Mirčeski, Miha Bukleski, Sandra Dimitrovska-Lazova, Arianit A. Reka, Slobotka Aleksovska
TL;DR
This paper studies the synthesis and electrocatalytic properties of PrMn0.5M0.5O3 perovskites, finding that some are highly effective for ion and hydrogen peroxide oxidation.
Contribution
The paper introduces new PrMn0.5M0.5O3 perovskites and evaluates their electrocatalytic performance for OH− and H2O2 oxidation.
Findings
PrMn0.5Fe0.5O3 shows high electrocatalytic activity for OH− oxidation.
PrMn0.5Fe0.5O3 and PrMn0.5Co0.5O3 exhibit significant efficiency for H2O2 oxidation with a peak at 0.6 V.
The perovskites are pure and isostructural with a Pnma space group.
Abstract
In this paper, the synthesis, characterization, and investigation of electrocatalytic properties of perovskites of general formula PrMn0.5M0.5O3 (M = Cr, Fe, Co, Ni) are presented. The synthesis was conducted by the solution combustion method using glycine as a fuel. The perovskite with the formula PrMn0.5Fe0.5O3 was also synthesized by the sol–gel combustion method with citric acid as fuel. The obtained perovskites were investigated by X-ray powder diffraction (XRPD), scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDX), infrared spectroscopy, and cyclic voltammetry. The XRPD patterns showed that the compounds are pure and isostructural within the series. The unit cell parameters of the compounds were determined within the Pnma space group, and several crystallochemical parameters were calculated and discussed. The recorded SEM images of the perovskites…
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Taxonomy
TopicsMagnetic and transport properties of perovskites and related materials · Electronic and Structural Properties of Oxides · Electrocatalysts for Energy Conversion