Synergistic effect of flower-like MnFe2O4/MoS2 on photo-Fenton oxidation remediation of tetracycline polluted water

Xiaoyu Wei; Huan Yi; Cui Lai; Xiuqin Huo; Dengsheng Ma; Chunyan Du

doi:10.1016/j.jcis.2021.10.033

Synergistic effect of flower-like MnFe₂O₄/MoS₂ on photo-Fenton oxidation remediation of tetracycline polluted water

J Colloid Interface Sci. 2022 Feb 15;608(Pt 1):942-953. doi: 10.1016/j.jcis.2021.10.033. Epub 2021 Oct 11.

Authors

Xiaoyu Wei¹, Huan Yi², Cui Lai³, Xiuqin Huo¹, Dengsheng Ma¹, Chunyan Du⁴

Affiliations

¹ College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China.
² College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China. Electronic address: huanyi@hnu.edu.cn.
³ College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China. Electronic address: laicui@hnu.edu.cn.
⁴ School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China.

PMID: 34785469
DOI: 10.1016/j.jcis.2021.10.033

Abstract

In this work, a flower-like MnFe₂O₄-MoS₂ (FMW) catalyst was successfully prepared as a catalyst for photo-Fenton oxidation. The flower-like structured FMW possessed large open surface area, which exposed enough active sites and can fully contact with tetracycline (TC). We studied the effect of different FMW composites, H₂O₂ concentration and light intensity on the photo-Fenton process. 1FMW (MnFe₂O₄:MoS₂ = 1:10 in mol) exhibited the best degradation effect on TC, and 1 mmol/L of H₂O₂ and 398.73 mW/cm² of light were the optimum parameters. A p-n heterojunction was formed in 1FMW, ensuring the stability of composite and the fast electron transfer. Holes, •O₂^- and •OH were generated in photo-Fenton process and participated in TC degradation. Notably, FMW can be recycled quickly under an external magnetic field due to its magnetic properties. Overall, FMW shows good catalytic stability and recoverability in photo-Fenton oxidation process, which has a broad application prospect.

Keywords: MnFe(2)O(4); MoS(2); Photo-Fenton process; Synergistic effect; Visible light-driven.

MeSH terms

Anti-Bacterial Agents
Hydrogen Peroxide*
Molybdenum*
Tetracycline
Water

Substances

Anti-Bacterial Agents
Water
Molybdenum
Hydrogen Peroxide
Tetracycline