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

TitleMolybdenum sulfide Co-catalytic Fenton reaction for rapid and efficient inactivation of Escherichia coli
Authors
KeywordsBacterial inactivation
Co-catalytic
Fenton reaction
Molybdenum sulfide
Issue Date2018
Citation
Water Research, 2018, v. 145, p. 312-320 How to Cite?
AbstractAs 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.
Persistent Identifierhttp://hdl.handle.net/10722/341235
ISSN
2023 Impact Factor: 11.4
2023 SCImago Journal Rankings: 3.596
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLiu, Jun-
dc.contributor.authorDong, Chencheng-
dc.contributor.authorDeng, Yuanxin-
dc.contributor.authorJi, Jiahui-
dc.contributor.authorBao, Shenyuan-
dc.contributor.authorChen, Cuirong-
dc.contributor.authorShen, Bin-
dc.contributor.authorZhang, Jinlong-
dc.contributor.authorXing, Mingyang-
dc.date.accessioned2024-03-13T08:41:13Z-
dc.date.available2024-03-13T08:41:13Z-
dc.date.issued2018-
dc.identifier.citationWater Research, 2018, v. 145, p. 312-320-
dc.identifier.issn0043-1354-
dc.identifier.urihttp://hdl.handle.net/10722/341235-
dc.description.abstractAs 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.-
dc.languageeng-
dc.relation.ispartofWater Research-
dc.subjectBacterial inactivation-
dc.subjectCo-catalytic-
dc.subjectFenton reaction-
dc.subjectMolybdenum sulfide-
dc.titleMolybdenum sulfide Co-catalytic Fenton reaction for rapid and efficient inactivation of Escherichia coli-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.watres.2018.08.039-
dc.identifier.pmid30165316-
dc.identifier.scopuseid_2-s2.0-85053041356-
dc.identifier.volume145-
dc.identifier.spage312-
dc.identifier.epage320-
dc.identifier.eissn1879-2448-
dc.identifier.isiWOS:000449137700030-

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