https://doi.org/10.1140/epjp/s13360-024-05584-3
Regular Article
Comparing photocatalytic degradation of different dyes in CoFe2O4@MoS2 with Co0.5Ni0.5Fe2O4@MoS2 nanocomposites
Department of Physics, College of Sciences, Shiraz University, 71946-84795, Shiraz, Iran
Received:
17
May
2024
Accepted:
21
August
2024
Published online:
6
September
2024
In this study, the photocatalytic degradation of different dyes in CoFe2O4@MoS2 and Co0.5Ni0.5Fe2O4@MoS2 nanocomposites were investigated and compared. These nanostructures were synthesized by hydrothermal method, and CoxNi(1−x)Fe2O4 prepared by sol–gel. The obtained results from the FESEM, TEM, XRD, FTIR, and Raman spectroscopy confirm the formation of the nanocomposite. The magnetic properties of these compounds indicate that these nanocomposites have a simple and economic recovery by using magnetic field. The effect of Ni-doped on the degradation of anionic (methylene orange) and cationic (methylene blue and malachite green) dyes were investigated. For the degradation of Methylene orange (MO), Co0.5Ni0.5Fe2O4@MoS2 nanocomposite exhibits better photocatalytic activity than CoFe2O4@MoS2. According to The Zeta potential analysis, it was found that CoFe2O4@MoS2 has a strong negative surface charge. By doping this nanostructure with Ni, the negative charge on the surface becomes less, which leads to an improvement in the degradation of methylene orange. As Malachite green (MG) and Methylene blue (MB) degradation are concerned, the CoFe2O4@MoS2 exhibits the highest photocatalytic activity, where the degradation efficiency for MG and MB are 99.9% and 98.55% in 15 and 24 min, respectively. The Co0.5Ni0.5Fe2O4@MoS2 also indicate the excellent photocatalytic performance for MB with 98.26% degradation efficiency. The photocatalyst mechanism proposed that radical.O2− plays an essential role in photocatalytic activity. Moreover, the CoxNi(1−x)Fe2O4@MoS2 is stable and recyclable. These results contribute to a better understanding of the design and optimization of photocatalytic materials in dye degradation.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
