BiFeO3/MoS2 nanocomposites with the synergistic effect between MoVI/MoIV and FeIII/FeII redox cycles for enhanced Fenton-like activity

被引：27
|
作者：
Yu, Kaifeng [1 ]
Li, Lehang [1 ]
Zang, Chengjie [1 ]
Zhao, Bin [2 ]
Chen, Feng [1 ]
机构：
[1] East China Univ Sci & Technol, Key Lab Adv Mat & Inst Fine Chem, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China
[2] Shenzhen Univ, Coll Mat Sci & Engn, 1066 Xueyuan Ave, Shenzhen 518055, Guangdong, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2019年 / 578卷
基金：
中国国家自然科学基金;
关键词：
BiFeO3; MoS2; Nanocomposite; Fenton-like reaction; Redox cycles; H2O2; DECOMPOSITION; DEGRADATION; PERFORMANCE; EVOLUTION; CATALYST; NANOSHEETS; OXIDATION; NANOPARTICLES; REDUCTION; COMPOSITE;
D O I：
10.1016/j.colsurfa.2019.123607
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
BiFeO3/MoS2 nanocomposites with different composition ratios were synthesized under hydrothermal treatment and employed as heterogeneous Fenton-like catalysts. The nanocomposite sample with 80% MoS2 content exhibited the highest Fenton-like activity by degrading acid orange 7, which was 406.0 and 8.8 times higher than that of pristine BiFeO3 and MoS2, respectively. Instrumental characterizations including Raman and XPS were employed to deeply investigate the interfacial interaction between BiFeO3 and MoS2. The results indicated that the strong interfacial coupling of Bi-S bond was formed as a fast electron transfer channel where BiFeO3 could accept electrons from MoS2. A proposed mechanism suggested that the Fenton-like performance of BiFeO3/MoS2 was promoted by the synergistic effect between Mo-VI/ Mo-IV and Fe-III/ Fe-II redox cycles.
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页数：8
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