Facile synthesis of Cu-doped manganese oxide octahedral molecular sieve for the efficient degradation of sulfamethoxazole via peroxymonosulfate activation

Yuhua Qiu; Yingping Huang; Yanlan Wang; Xiang Liu; Di Huang

doi:10.1007/s12613-024-2858-z

Volume 31 Issue 12

Dec. 2024

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2024 > 31(12): 2770-2780

Yuhua Qiu, Yingping Huang, Yanlan Wang, Xiang Liu, and Di Huang, Facile synthesis of Cu-doped manganese oxide octahedral molecular sieve for the efficient degradation of sulfamethoxazole via peroxymonosulfate activation, Int. J. Miner. Metall. Mater., 31(2024), No. 12, pp. 2770-2780. https://doi.org/10.1007/s12613-024-2858-z

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Yuhua Qiu, Yingping Huang, Yanlan Wang, Xiang Liu, and Di Huang, Facile synthesis of Cu-doped manganese oxide octahedral molecular sieve for the efficient degradation of sulfamethoxazole via peroxymonosulfate activation, Int. J. Miner. Metall. Mater., 31(2024), No. 12, pp. 2770-2780. https://doi.org/10.1007/s12613-024-2858-z

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Research Article

Facile synthesis of Cu-doped manganese oxide octahedral molecular sieve for the efficient degradation of sulfamethoxazole via peroxymonosulfate activation

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Corresponding authors:
Xiang Liu E-mail: xiang.liu@ctgu.edu.cn

Di Huang E-mail: huangd94@iccas.ac.cn
Received: 26 November 2023; Revised: 24 January 2024; Accepted: 22 February 2024; Available online: 23 February 2024

Abstract

Abstract

Advanced processes for peroxymonosulfate (PMS)-based oxidation are efficient in eliminating toxic and refractory organic pollutants from sewage. The activation of electron-withdrawing $ {\mathrm{HSO}}_{5}^{-} $ releases reactive species, including sulfate radical ($ {\text{·}\mathrm{S}\mathrm{O}}_{4}^{-} $), hydroxyl radical ($ \text{·}\mathrm{O}\mathrm{H} $), superoxide radical ($ {\text{·}\mathrm{O}}_{2}^{-} $), and singlet oxygen (¹O₂), which can induce the degradation of organic contaminants. In this work, we synthesized a variety of M-OMS-2 nanorods (M = Co, Ni, Cu, Fe) by doping Co²⁺, Ni²⁺, Cu²⁺, or Fe³⁺ into manganese oxide octahedral molecular sieve (OMS-2) to efficiently remove sulfamethoxazole (SMX) via PMS activation. The catalytic performance of M-OMS-2 in SMX elimination via PMS activation was assessed. The nanorods obtained in decreasing order of SMX removal rate were Cu-OMS-2 (96.40%), Co-OMS-2 (88.00%), Ni-OMS-2 (87.20%), Fe-OMS-2 (35.00%), and OMS-2 (33.50%). Then, the kinetics and structure–activity relationship of the M-OMS-2 nanorods during the elimination of SMX were investigated. The feasible mechanism underlying SMX degradation by the Cu-OMS-2/PMS system was further investigated with a quenching experiment, high-resolution mass spectroscopy, and electron paramagnetic resonance. Results showed that SMX degradation efficiency was enhanced in seawater and tap water, demonstrating the potential application of Cu-OMS-2/PMS system in sewage treatment.
- sulfamethoxazole;
- manganese oxide octahedral molecular sieve;
- peroxymonosulfate;
- sewage treatment;
- copper

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