文献类型：期刊文献

英文题名：Molybdenum sulfide Co-catalytic Fenton reaction for rapid and efficient inactivation of Escherichia colis

作者：Liu, Jun;Dong, Chencheng;Deng, Yuanxin;Ji, Jiahui;Bao, Shenyuan;Chen, Cuirong;Shen, Bin;Zhang, Jinlong;Xing, Mingyang[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Natl Engn Lab Ind Wastewater Treatment, 130 Meilong Rd, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2018

卷号：145

起止页码：312

外文期刊名：WATER RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000449137700030)】；

基金：This work was supported by the State Key Research Development Program of China (2016YFA0204200), the National Natural Science Foundation of China (21822603, 21773062, 21577036, 21377038, 5171101651), the Science and Technology Commission of Shanghai Municipality (16JC1401400, 17520711500), the Shanghai Pujiang Program (17PJD011), and the Fundamental Research Funds for the Central Universities (22A201514021).

语种：英文

外文关键词：Fenton reaction; Co-catalytic; Molybdenum sulfide; Bacterial inactivation

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 (center dot OH). However, the conventional Fenton system always exhibits a low H2O2 decomposition efficiency, leading to a low production yield of center dot 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 center dot 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 center dot 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 center dot 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. (C) 2018 Elsevier Ltd. All rights reserved.