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- Title
Construction of a novel ferrihydrite/MoS<sub>2</sub> heterogeneous Fenton-like catalyst for efficient degradation of organic pollutants under neutral conditions.
- Authors
Chang, Da; Sun, Juanjuan; Wang, Chang; Hao, Linlin; Zeng, Ming
- Abstract
In this work, we have fabricated a novel Fenton-like ferrihydrite/MoS2 (Fh/MoS2) composite and verified that the introduction of a small amount of iron on the surface of MoS2 can directly promote the exposure of Mo4+, finally enhancing the catalytic activity of the catalyst. Even though the content of iron element is only 1.19% in the composite, the reaction rate constant of Fh/MoS2 system for the degradation of environmental pollutants, such as organic dyes, antibiotic, and ionic liquid, is all much better than that of pure MoS2 system, which is attributed to much more generation of reactive oxygen species derived from synergistic effect of Fe3+/Fe2+ and Mo4+/Mo6+ redox cycles. The results of XPS and low-temperature EPR confirm that the exposure amount of Mo4+ active sites of 10% Fh/MoS2 is greatly increased, which is conducive to the conversion of Fe3+ to Fe2+ in the reaction process, thus effectively promoting the activation of H2O2.
- Subjects
HETEROGENEOUS catalysts; POLLUTANTS; ENVIRONMENTAL degradation; MOLYBDENUM sulfides; ORGANIC dyes; CATALYTIC activity; REACTIVE oxygen species
- Publication
Environmental Science & Pollution Research, 2023, Vol 30, Issue 48, p105742
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-023-29776-z