Issue 7, 2025, Issue in Progress

Unveiling the efficacy and mechanism of chlortetracycline degradation by MnFeCu-LDH/GO activating of peroxymonosulfate

Abstract

Antibiotics are frequently detected in aquatic environments, posing potential risks to ecological systems and human health. Among the various treatment strategies, advanced oxidation processes (AOPs) utilizing peroxymonosulfate (PMS) activation stand out due to their ease of activation and potent oxidative capabilities. This study synthesized manganese–iron–copper layered double hydroxides coupled with graphene oxide (MnFeCu-LDH/GO) using eco-friendly transition metals. Optimal conditions of pH 7, 298 K, and 0.2 g L−1 dosage of both catalyst and PMS achieved 98% CTC removal in 30 minutes. The composite was employed for the degradation of chlortetracycline (CTC) through PMS activation. Reactive oxygen species (ROS), including 1O2, ˙OH, and SO4˙, were identified and quantified through trapping and quenching experiments, and 1O2 was identified, to be the most significant contributor to degradation. The catalyst demonstrated excellent reusability, maintaining high degradation efficiency after five cycles. These findings suggest that MnFeCu-LDH/GO-activated PMS is a promising method for mitigating antibiotic contamination in water.

Graphical abstract: Unveiling the efficacy and mechanism of chlortetracycline degradation by MnFeCu-LDH/GO activating of peroxymonosulfate

Supplementary files

Article information

Article type
Paper
Submitted
08 Dec 2024
Accepted
02 Feb 2025
First published
17 Feb 2025
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2025,15, 5277-5285

Unveiling the efficacy and mechanism of chlortetracycline degradation by MnFeCu-LDH/GO activating of peroxymonosulfate

D. Shi, X. Mao, M. Fei, C. Liang, Y. Luo, Z. Xu and L. Hu, RSC Adv., 2025, 15, 5277 DOI: 10.1039/D4RA08639B

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