Molybdenum sulfide Co-catalytic Fenton reaction for rapid and efficient inactivation of Escherichia coli

Water Research
Jun LiuMingyang Xing

Abstract

As a typical advanced oxidation technology, the Fenton reaction has been employed for the disinfection, owing to the strong oxidizability of hydroxyl radicals (·OH). However, the conventional Fenton system always exhibits a low H2O2 decomposition efficiency, leading to a low production yield of ·OH, which makes the disinfection effect unsatisfactory. Herein, we develop a molybdenum sulfide (MoS2) co-catalytic Fenton reaction for rapid and highly efficient inactivation of Escherichia coli K-12 (E. coli) and Staphylococcus aureus (S. aureus). As a co-catalyst in the Fe(II)/H2O2 Fenton system, MoS2 can greatly facilitate the Fe(III)/Fe(II) cycle reaction by the exposed Mo4+ active sites, which significantly improves the H2O2 decomposition efficiency for the ·OH production. As a result, the MoS2 co-catalytic Fenton system can reach up to 83.37% of inactivation rate of E. coli just in 1 min and 100% of inactivation rate within 30 min, which increased by 2.5 times than that of the conventional Fenton reaction. Furthermore, the ·OH as the primary reactive oxygen species (ROS) in MoS2 co-catalytic Fenton reaction was measured and verified by electron paramagnetic resonance (EPR) and photoluminescence (PL). It is demonstrated an increas...Continue Reading

Citations

Apr 30, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Hongtao YuHeng Liang
Feb 24, 2021·Chemical Communications : Chem Comm·Yingcan ZhaoXingyu Jiang
Jan 26, 2021·Chemical Reviews·Zhongmin TangWenbo Bu
Feb 26, 2021·The Science of the Total Environment·Cui LaiNing An
Jul 26, 2021·The Science of the Total Environment·Miguel Herraiz-CarbonéCristina Sáez
Sep 16, 2021·Advanced Healthcare Materials·Shan SunShuqing Guo

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