Peracetic acid activation for efficient degradation of p -nitrophenol by mixed-valence iron-based metal-organic framework

被引：0
|
作者：
Hu Q. [1 ,2 ]
Yang T. [1 ]
Zhu F. [3 ]
Lu W. [3 ,4 ]
Wu M. [1 ,3 ]
Yu D. [1 ,2 ,4 ]
机构：
[1] Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Zhejiang, Hangzhou
[2] Tongxiang Research Institute, Zhejiang Sci-Tech University, Zhejiang, Jiaxing
[3] Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Zhejiang, Hangzhou
[4] School of Materials Science & Engineering, Zhejiang Sci-Tech University, Zhejiang, Hangzhou
来源：
Fangzhi Xuebao/Journal of Textile Research | 2022年 / 43卷 / 11期
关键词：
catalytic degradation; dyeing and printing wastewater; iron-based metal-organic framework; p; -; nitrophenol; peracetic acid;
D O I：
10.13475/j.fzxb.20210902908
中图分类号：
学科分类号：
摘要：
In order to improve the advanced treatment efficiency of iron-based metal-organic frameworks (Fe-MOFs) for printing and dyeing wastewater, mixed-valence MIL-53(Fe) (MV-MIL-53(Fe)) containing Fe(II) and Fe(UI) was prepared by an in-situ doping solvothermal approach. The MV-MIL-53(Fe) was systematically characterized with X-ray diffraction, scanning electron microscopy, nitrogen adsorption equipment, and pyridine chemisorbed infrared spectroscopy, p-nitrophenol and peracetic acid (PAA) were selected as the model target and green oxidant respectively to study the degradation activity and major active species of MV-MIL-53 (Fe) . The results show that Fe (II) dopant increased the Lewis acidity of MIL - 53 (Fe), thus offering more active sites for PAA activation. The 4 - NP degradation kinetic rate constant of MV-MIL-53(Fe)/PAA system could reach to 0. 052 1 min-1, which was 2.05, 1.45, and 6. 68 times higher than MV-MIL-53 (Fe)/H2O2, MIL-53 (Fe)/PAA, and MIL-53 (Fe)/H2O2counterparts, respectively. After successive cycling for five runs, the MV - MIL - 53 (Fe) still exhibited good structure stability and catalysis activity for 4 - NP degradation using PAA. Hydroxyl radicals were verified as the main reactive species converting from PAA for the rapid degradation of 4-NP. © 2022 China Textile Engineering Society. All rights reserved.
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页码：133 / 140
页数：7
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