DOI: 10.1016/j.watres.2018.08.039
Scopus记录号: 2-s2.0-85053041356
论文题名: Molybdenum sulfide Co-catalytic Fenton reaction for rapid and efficient inactivation of Escherichia coli
作者: Liu J. ; Dong C. ; Deng Y. ; Ji J. ; Bao S. ; Chen C. ; Shen B. ; Zhang J. ; Xing M.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 145 起始页码: 312
结束页码: 320
语种: 英语
英文关键词: Bacterial inactivation
; Co-catalytic
; Fenton reaction
; Molybdenum sulfide
Scopus关键词: Catalyst activity
; Disinfection
; Efficiency
; Electron spin resonance spectroscopy
; Escherichia coli
; Iron compounds
; Layered semiconductors
; Molybdenum compounds
; Paramagnetic resonance
; Sulfur compounds
; Advanced oxidation technology
; Bacterial inactivation
; Decomposition efficiency
; Electron paramagnetic resonances (EPR)
; Environmental remediation
; Fenton reactions
; Molybdenum sulfide
; Reactive oxygen species
; Oxidation
; bacterium
; catalysis
; catalyst
; chemical reaction
; coliform bacterium
; decomposition
; disinfection
; hydrogen peroxide
; hydroxyl radical
; inorganic compound
; microbial activity
; reactive oxygen species
; Bacteria (microorganisms)
; Escherichia coli
; Escherichia coli K12
; Staphylococcus aureus
英文摘要: 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 increased amount of ·OH generated from the decomposition of H2O2 in the presence of MoS2, which is responsible for the rapid and efficient inactivation of E. coli and S. aureus. This study provides a new perspective for rapid and highly efficient inactivation of bacteria in environmental remediation. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112448
Appears in Collections: 气候减缓与适应
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作者单位: National Engineering Laboratory for Industrial Wastewater Treatment, Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
Recommended Citation:
Liu J.,Dong C.,Deng Y.,et al. Molybdenum sulfide Co-catalytic Fenton reaction for rapid and efficient inactivation of Escherichia coli[J]. Water Research,2018-01-01,145