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- Title
Synthesis of a Novel Catalyst MnO/CNTs for Microwave-Induced Degradation of Tetracycline.
- Authors
Liu, Tianming; Yuan, Guobao; Lv, Guocheng; Li, Yuxin; Liao, Libing; Qiu, Siyao; Sun, Chenghua
- Abstract
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.
- Subjects
TETRACYCLINE; TETRACYCLINES; ORGANIC water pollutants; CATALYST synthesis; INTERFACIAL bonding; HYDROXYL group; CARBON nanotubes; MANGANESE oxides
- Publication
Catalysts (2073-4344), 2019, Vol 9, Issue 11, p911
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal9110911