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Investigating the effect of doping LaCoO3 in CoFe2O4 forming nanocomposite, towards oxygen evolution and methanol oxidation reactions in alkaline medium

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Title Investigating the effect of doping LaCoO3 in CoFe2O4 forming nanocomposite, towards oxygen evolution and methanol oxidation reactions in alkaline medium
 
Creator Parihar, Reena
Mishra, Prakhar
Singh, Yamini
Singh, Narendra Kumar
 
Subject Nanocomposite
Sol-gel procedure
XRD
Oxygen evolution reaction
Methanol oxidation reaction
 
Description 485-494
CoFe2O4-LaCoO3 was synthesized employing a two-step, low-temperature wet chemical method involving
co-precipitation and sol-gel techniques. The co-precipitation process was employed to prepare CoFe2O4, with pH regulation
at 11 using NaOH solution. Subsequently, CoFe2O4-LaCoO3 was synthesized via sol-gel process. The synthesized materials
were subjected to physicochemical analysis using Fourier Transform Infrared spectroscopy (FTIR), X-ray diffraction (XRD)
and Scanning Electron Microscopy (SEM). The electrocatalytic properties of these materials were evaluated in terms of their
performance towards oxygen evolution reaction (OER) and methanol oxidation reaction (MOR) in alkaline medium. The
redox behaviour of the materials was characterized through cyclic voltammetry analysis in 1M KOH solution. The
electrocatalytic activity of the materials, when assessed using anodic polarization curves revealed that CoFe2O4-LaCoO3
exhibited higher activity, with current densities of 1.6 mA cm–2 for OER and 9.2 mA cm–2 for MOR recorded at 650 mV.
Further, the thermodynamic parameters like standard enthalpy of activation (ΔH°#), standard entropy of activation (ΔS°#)
and standard electrochemical energy of activation (ΔH􀭣􀭪
∘#) were calculated by recording anodic polarization curve in KOH as
well as KOH with CH3OH solutions at various temperatures. The findings presented in this study demonstrate the promising
electrocatalytic performance of CoFe2O4-LaCoO3 film electrode for applications in OER and MOR under alkaline condition.
 
Date 2024-05-20T04:43:59Z
2024-05-20T04:43:59Z
2024-05
 
Type Article
 
Identifier 2583-1321 (Online); 0019-5103 (Print)
http://nopr.niscpr.res.in/handle/123456789/63918
https://doi.org/10.56042/ijc.v63i5.9153
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJC Vol.63(05) [May 2024]