Investigation on structural, optical and photocatalytic activity of CoMn2O4 nanoparticles prepared via simple co-precipitation method

The tetragonal spinel Cobalt manganite (CoMn2O4) nanoparticles (NPs) were prepared successfully via the co-precipitation route. The crystal structure and phase purity was primarily confirmed by the PXRD pattern. The optical band gap of the prepared CoMn2O4 NPs was found to be 1.70 and 2.0 eV. The mo...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2021-01, Vol.601, p.412349, Article 412349
Main Authors: Martin Mark, John Abel, Venkatachalam, Archana, A, Pramothkumar, N, Senthilkumar, K, Jothivenkatachalam, Jesuraj, Joseph prince
Format: Article
Language:English
Subjects:
Band gap
Catalytic activity
Co-precipitation
Cobalt compounds
Cobalt manganite
Coprecipitation
Crystal defects
Crystal structure
Dyes
Functional groups
Magnetic properties
Magnetometers
Malachite green
Methylene blue
Nanoparticles
Optical properties
Photocatalysis
Photocatalytic
Studies
Tetragonal spinel
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Summary:The tetragonal spinel Cobalt manganite (CoMn2O4) nanoparticles (NPs) were prepared successfully via the co-precipitation route. The crystal structure and phase purity was primarily confirmed by the PXRD pattern. The optical band gap of the prepared CoMn2O4 NPs was found to be 1.70 and 2.0 eV. The morphological analysis of CoMn2O4 NPs was carried out by SEM images. The EDX spectrum gives the elemental composition of the prepared CoMn2O4 NPs. The FTIR and PL spectrum gives details of the functional groups and crystal defects presents in the synthesized sample. Magnetic property of the prepared sample was analyzed using Vibrating Sample Magnetometer (VSM). The photocatalytic activity of the CoMn2O4 NPs was performed against the organic dyes such as Methylene Blue (MB), Malachite Green (MG) and Congo Red (CR) under direct sunlight. The degradation efficiency was achieved to be 87.80%, 79.43% and 52.78% respectively for MG, MB, and CR dyes.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2020.412349