A Nanostructure with Fe₂O₃/MoS₂ Heterojunctions Coated with a Carbon Layer: Insight on Preparation Method and Enhanced Performance in Photo-Fenton Reaction
A.Q.M. Abdullah Istiaq1, Huihui Mao2*
Abstract
The photo-Fenton reaction is a proven method for pollutant degradation, and its efficiency can be enhanced by designing nanostructures that optimize catalytic activity. In this study, a Fe₂O₃/MoS₂@C nanostructure, featuring Fe₂O₃/MoS₂ heterojunctions coated with a thin carbon layer, was developed to improve the photo-Fenton degradation process. The nanostructure was synthesized using a straightforward approach involving the deposition of MoS₂ nanosheets onto Fe₂O₃ nanoparticles, followed by carbon coating via pyrolysis of a carbon precursor. Under visible light, the Fe₂O₃/MoS₂ heterojunction facilitated efficient charge separation, with photo-induced electrons and holes driving the generation of reactive oxygen species. The carbon layer enhanced visible-light absorption and catalyst stability. Evaluation of the photo-Fenton reaction revealed that reactive species, primarily •OH and h⁺, contributed significantly to pollutant degradation, with their roles assessed through radical scavenging experiments. For comparison, an uncoated Fe₂O₃/MoS₂ nanostructure was prepared, highlighting the carbon layer’s role in accelerating degradation rates and improving photothermal effects. This work demonstrates a simplified yet effective nanostructure design for boosting photo-Fenton performance, offering insights into preparation strategies and the benefits of integrating heterojunctions with a carbon coating.
Keywords
photo-fenton reaction; Fe₂O₃/MoS₂ heterojunction; carbon coating; nanostructure.
Cite This Article
Istiaq, A. A. Q. M., Mao, H. (2025). A Nanostructure with Fe₂O₃/MoS₂ Heterojunctions Coated with a Carbon Layer: Insight on Preparation Method and Enhanced Performance in Photo-Fenton Reaction. International Journal of Scientific Advances (IJSCIA), Volume 6| Issue 2: Mar-Apr 2025, Pages 249-256 URL: https://www.ijscia.com/wp-content/uploads/2025/03/Volume6-Issue2-Mar-Apr-No.849-249-256.pdf
Volume 6 | Issue 2: Mar – Apr 2025
