S-doped NiFe-based catalyst for fast degradation of methylene blue by heterogeneous photo-Fenton reaction

被引：11

作者：

Guo, Xiaojun ^{[1
]}

Meng, Qian ^{[1
]}

Wang, Dianguo ^{[1
]}

Zha, Fei ^{[1
]}

Tang, Xiaohua ^{[1
]}

Tian, Haifeng ^{[1
]}

机构：

[1] Northwest Normal Univ, Coll Chem & Chem Engn, 967 Anning East Rd, Lanzhou 730070, Peoples R China

来源：

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2021年 / 28卷 / 27期

关键词：

NiFe2Sx particles; Photo-Fenton; Fast degradation; Methylene blue; Pathway; AQUEOUS-SOLUTION; PHOTOCATALYTIC OXIDATION; ENHANCED DEGRADATION; ORGANIC POLLUTANTS; IRON SLUDGE; PERFORMANCE; ADSORPTION; DECOMPOSITION; EFFICIENCY; PHENOL;

D O I：

10.1007/s11356-021-13212-1

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

S-doped NiFe-based particles were prepared by a solvothermal method and used to degrade methylene blue (MB) aqueous solutions with visible light in a heterogeneous Fenton reaction. The obtained solid samples were characterized by XRD, SEM, TEM, and XPS. It was found that 0.2 g L-1 NiFe2S4 can degrade 99.8% MB solution within 6 min in the presence of 5 mM H2O2 and natural pH. The recycle experiments results indicate that the NiFe2S4 catalyst possessed better stability than NiFe2O4. Furthermore, NiFe2S4 particles can be easily separated from contaminant solution by using a magnet due to their excellent ferromagnetism. COD analysis experiments indicated that the COD removal rate of NiFe2S4 is 73.1% in 30 min. A possible mechanism was proposed, and the degradation products were measured by LC-MS.

引用

页码：36112 / 36121

页数：10

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