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Iron–Cobalt Bimetallic Metal–Organic Framework-Derived Carbon Materials Activate PMS to Degrade Tetracycline Hydrochloride in Water.

Authors :
Liu, Qin
Zhang, Huali
Zhang, Kanghui
Li, Jinxiu
Cui, Jiaheng
Shi, Tongshan
Source :
Water (20734441); Oct2024, Vol. 16 Issue 20, p2997, 18p
Publication Year :
2024

Abstract

Organic pollutants entering water bodies lead to severe water pollution, posing a threat to human health. The activation of persulfate advanced oxidation processes using carbon materials derived from MOFs as substrates can efficiently treat wastewater contaminated with organic pollutants. This research uses NH<subscript>2</subscript>-MIL-101(Fe) as a substrate, doped with Fe<superscript>2+</superscript> and Co<superscript>2+</superscript>, to prepare Fe/Co-CNs through a one-step carbonization method. The surface morphology, pore structure, and chemical composition of Fe/Co-CNs were investigated using characterization techniques such as XRD, SEM, TEM, XPS, FT-IR, BET, and Raman. A comparative study was conducted on the performance of catalysts with different Fe/Co ratios in activating PMS for the degradation of organic pollutants, as well as the effects of various influencing factors (the dosage of Fe/Co-CNs, the amount of peroxymonosulfate (PMS), the initial pH of the solution, the TC concentration, and inorganic anions) on the catalyst's activation of persulfate for TC degradation. Through radical quenching experiments and post-degradation XPS analysis, the active radicals in the FeCo-CNs/PMS system were investigated to explain the possible mechanism of TC degradation in the Fe/Co-CNs/PMS system. The results indicate that Fe/Co-CNs-2 (with a Co<superscript>2+</superscript> doping amount of 20%) achieves a degradation rate of 93.34% for TC (tetracycline hydrochloride) within 30 min when activating PMS, outperforming other Co<superscript>2+</superscript> doping amounts. In addition, singlet oxygen (<superscript>1</superscript>O<subscript>2</subscript>) is the main reactive species in the reaction system. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20734441
Volume :
16
Issue :
20
Database :
Complementary Index
Journal :
Water (20734441)
Publication Type :
Academic Journal
Accession number :
180529525
Full Text :
https://doi.org/10.3390/w16202997