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Open AccessArticle

Synthesis of a Novel Catalyst MnO/CNTs for Microwave-Induced Degradation of Tetracycline

Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
Department of Chemistry and Biotechnology, and Center for Translational Atomaterials, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China
Authors to whom correspondence should be addressed.
Catalysts 2019, 9(11), 911;
Received: 15 October 2019 / Revised: 27 October 2019 / Accepted: 28 October 2019 / Published: 30 October 2019
(This article belongs to the Section Catalytic Materials)
Microwave-induced catalytic degradation (MICD) has been considered as one of the most prospective approaches to remove organic contaminants from water. High-performance catalysts, ideally offering efficient degradation ability, are essential to this process. This work reports the fabrication of manganese oxide on carbon nanotubes (MnO/CNTs) as an efficient catalyst under microwave irradiation (MI) to remove tetracycline (TC) from aqueous solution. The hybrid MnO/CNTs structure shows excellent performance in TC degradation. Combining experimental characterization and theoretical calculations, synergistic mechanisms are revealed: (i) Strong MnO/CNTs interaction stabilizes Mn(II) through interfacial bonding; (ii) high-spin states associated with low coordinated Mn(II) play a major role in MICD; and (iii) superoxide radicals (•O2) and hydroxyl radicals (•OH) induced by microwave input are identified as the major active species. View Full-Text
Keywords: microwave-induced; manganese oxide; catalysts; tetracycline; degradation microwave-induced; manganese oxide; catalysts; tetracycline; degradation
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MDPI and ACS Style

Liu, T.; Yuan, G.; Lv, G.; Li, Y.; Liao, L.; Qiu, S.; Sun, C. Synthesis of a Novel Catalyst MnO/CNTs for Microwave-Induced Degradation of Tetracycline. Catalysts 2019, 9, 911.

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