Highly efficient activation of peroxymonosulfate by ZIF-67 anchored cotton derived for ciprofloxacin degradation

Yong Xiao; Jiahong He; Jibin An; Taiping Xie; Junjie Lin

doi:10.1016/j.envres.2023.117863

Highly efficient activation of peroxymonosulfate by ZIF-67 anchored cotton derived for ciprofloxacin degradation

Environ Res. 2024 Mar 1:244:117863. doi: 10.1016/j.envres.2023.117863. Epub 2023 Dec 8.

Authors

Yong Xiao¹, Jiahong He², Jibin An³, Taiping Xie⁴, Junjie Lin⁵

Affiliations

¹ School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Wanzhou, 404100, China; Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Chongqing, 402160, China.
² School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Wanzhou, 404100, China; Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Chongqing, 402160, China. Electronic address: 20090005@cqwu.edu.cn.
³ Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Chongqing, 402160, China.
⁴ School of Materials Science and Engineering, Yangtze Normal University, Chongqing, 408100, China; Chongqing Preschool Education College, Chongqing, 404047, China. Electronic address: deartaiping@163.com.
⁵ School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Wanzhou, 404100, China. Electronic address: 14833673@qq.com.

PMID: 38070857
DOI: 10.1016/j.envres.2023.117863

Abstract

Metal-organic framework (MOF) and MOF-derived materials have attracted extensive research interest as environmental catalysts. In this study, a composite material (ZIF-67/CCot-8) was successfully prepared using cotton fiber as a substrate and growing ZIF-67 in situ. This material exhibited excellent catalytic performance and significantly improved the efficiency of antibiotics degradation. ZIF-67/CCot-8 at a concentration of 0.05 g/L, combined with 0.2 mM peroxymonosulfate (PMS), removed approximately 97% of ciprofloxacin (CIP) and 99% of tetracycline and sulfamethoxazole within 15 min. The high catalytic efficiency of this catalyst is mainly attributed to the uniform distribution of ZIF-67-derived nanoparticles on the surface of the cotton fibers, providing abundant active sites and thereby significantly enhancing the efficiency of antibiotics degradation. Radical quenching experiments and electron paramagnetic resonance (EPR) analyses revealed that sulfate radicals (SO₄^•-) and singlet oxygen (¹O₂) were the main active species. Mass spectrometry (MS) was used to elucidate the CIP degradation pathway. The growth of the roots and stems of soybean sprouts in different water environments (tap water, treated water, and untreated water) was also observed. The results demonstrated a significant improvement in the inhibition of plant growth in the post-degradation CIP solution, indicating a substantial reduction in the toxicity of the degraded aqueous solution. To validate the practicality of the ZIF-67/CCot-8/PMS system, a continuous-flow water-treatment device was designed. This system removed 98% of the CIP solution within 180 min, demonstrating its excellent durability. This study presents a potential pathway for effective antibiotics removal using MOF-derived materials.

Keywords: Advanced oxidation process; Ciprofloxacin; Soybean sprout; Wastewater treatment; ZIF-67.

MeSH terms

Anti-Bacterial Agents
Ciprofloxacin* / chemistry
Peroxides* / chemistry
Water

Substances

peroxymonosulfate
Ciprofloxacin
Peroxides
Water
Anti-Bacterial Agents