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Vol. 37 No. 1 (2025): Vol 37 Issue 1, 2025

Copyright (c) 2024 Reeja Gopalakrishnan Nair

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Synthesis and Characterization of LaFeO3@ZnS Core-Shell Nanocomposites as Photocatalyst for the Degradation of Methylene Blue Dye

https://doi.org/10.14233/ajchem.2025.32829
Reeja Gopalakrishnan Nair
Department of Physics, Government College Malappuram, Munduparamba P.O., Malappuram-676509, India
https://orcid.org/0009-0006-7379-8852

Corresponding Author(s) : Reeja Gopalakrishnan Nair

reejagnair10@gmail.com

Asian Journal of Chemistry, Vol. 37 No. 1 (2025): Vol 37 Issue 1, 2025

Abstract

A two-step process involving hydrothermal and co-precipitation methods was used to synthesize core-shell nanoparticles of lanthanum ferrite @zinc sulphide (LaFeO3@ZnS), which were then characterized. The X-ray diffraction (XRD) patterns exhibiting distinct diffraction peaks corresponding to both LaFeO3 and ZnS components confirmed the synthesis of the nanocomposite. Transmission electron microscopy (TEM) images confirmed that the nanocomposite exhibited a core-shell structure. The photoluminescence quenching in LaFeO3@ZnS nanoparticles indicates a decrease in the recombination of photogenerated charge carriers. The photocatalytic degradation of methylene blue was assessed using LaFeO3@ZnS core-shell nanoparticles, which showed a considerable improvement in efficiency compared to the pure LaFeO3 and ZnS nanoparticles. This superior photocatalytic performance can be attributed to the synergistic interaction between the LaFeO3 core and ZnS shell, which led to increased absorption of visible light by the photocatalyst and longer lifetimes of the photogenerated charge carriers without undergoing recombination.

Keywords

Photocatalysis Core-shell nanostructures Lanthanum ferrite Zinc sulphide Methylene blue dye Degradation
Nair, R. G. (2024). Synthesis and Characterization of LaFeO3@ZnS Core-Shell Nanocomposites as Photocatalyst for the Degradation of Methylene Blue Dye. Asian Journal of Chemistry, 37(1), 61–68. https://doi.org/10.14233/ajchem.2025.32829
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