MoS2/FeS Nanocomposite Catalyst for Efficient Fenton Reaction

Nanocomposites containing FeS as catalyst and MoS2 as cocatalyst have been synthesized toward efficient heterogeneous Fenton reaction. The deposition of FeS nano-particles in situ on the surface of MoS2 nanosheets creates strong contact between the two components and generates a large number of exposed Mo6+ sites and sulfur vacancies, which contribute to the enhanced degradation rate by accelerating Fe3+/Fe2+ cycling and ensuring rapid electron transfer. In addition, the MoS2/FeS nanocomposite catalysts exhibit the best performance at near-neutral conditions (pH 6.5), which solves the challenges in conventional Fenton reactions such as leaching of metal ions, the formation of iron slurry, and the need of adjusting solution pH. Further, the nanocomposite can maintain high efficiency after many recycling experiments. It is believed that the MoS2/ FeS nanocomposite represents an efficient heterogeneous Fenton catalyst that can greatly promote the performance of advanced oxidation processes (AOPs) for solving practical environmental issues.

Automated summary

Nanocomposites containing FeS as catalyst and MoS2 as cocatalyst have been synthesized for efficient heterogeneous Fenton reaction. The composite shows best performance at near-neutral conditions and can address challenges in conventional Fenton reactions, with high efficiency in recycling experiments. It is believed to be an efficient heterogeneous Fenton catalyst that can greatly enhance advanced oxidation processes in solving practical environmental issues.