文献类型：期刊文献

英文题名：Structure and defect engineering synergistically boost Mo6+/Mo4+ circulation of Sv-MoS2 based photo-Fenton-like system for efficient levofloxacin degradation

作者：Bai, He[1];Yang, Yuxiang[1];Dong, Mengyang[1];Yuan, Hongming[2];Huang, Yan[1];Liu, Xiangnong[3];Ni, Chaoying[4]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China;[3]Yangzhou Univ, Anal Test Ctr, Yangzhou 225009, Jiangsu, Peoples R China;[4]Univ Delaware, Dept Mat Sci & Engn, Newark, DE 19716 USA

年份：2024

卷号：358

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20243016749857);WOS:【SCI-EXPANDED(收录号:WOS:001368545000001)】；

基金：This work was supported by the National Natural Science Foundation of China (20577010, 20971043), and the Open Project Program of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University.

语种：英文

外文关键词：Urchin-like-S-r-Mos(2); Redox couples; Carbon defect; Self-regeneration; Photo-Fenton-like

摘要：The kinetics of redox couples based exclusively on peroxymonosulfate (PMS) are notably slow and inefficient. In this study, urchin-like Sv-MoS2 were in situ deposited onto defect-rich NBC-C3N5 surfaces using a hydrothermal method. The inherent defects in NBC-C3N5@Sv-MoS2 (NCM) along with sulfur vacancies (Sv) directionally inject electrons into Mo sites through a "stabilize-then-accelerate" strategy, culminating in the self-regeneration of Mo sites. Both experimental data and Density Functional Theory (DFT) calculations confirm that NCM effectively activates PMS, generating hydroxyl radicals (center dot OH) and sulfate radicals (SO4 center dot-) for the degradation of Levofloxacin (LFX) under visible light. The presence of Sv-MoS2 notably extends the peroxy bond (O-O) length in PMS, enhancing electron flux and thereby facilitating superior radical generation compared to singlet oxygen (O-1(2)). Furthermore, experimental assessments of reactors and stirring devices within the NCM system underscore its potential applications in water environmental remediation.