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Facile synthesis of superparamagnetic β-CD-MnFeO as a peroxymonosulfate activator for efficient removal of 2,4- dichlorophenol: structure, performance, and mechanism.

08:00 EDT 12th March 2020 | BioPortfolio

Summary of "Facile synthesis of superparamagnetic β-CD-MnFeO as a peroxymonosulfate activator for efficient removal of 2,4- dichlorophenol: structure, performance, and mechanism."

In this study, superparamagnetic β-CD-MnFeO with a large surface area was synthesized via a facile co-precipitation method, with β-cyclodextrin (β-CD) acting as a coating agent. The as-prepared β-CD-MnFeO exhibited better catalytic performance than bare MnFeO in terms of activating peroxymonosulfate (PMS) to degrade 2,4-dichlorophenol (2,4-DCP) over a broad pH range of 5-11. Electron spin resonance spectroscopy (ESR) and free radical quenching experiments indicate that various active species (SO/OH/O/O) are generated in the β-CD-MnFeO/PMS system and that pollutants trapped in the cyclodextrin cavity are quickly degraded. Various reaction parameters of the β-CD-MnFeO/PMS system and the stability of β-CD-MnFeO were also investigated. The results indicate that β-CD-MnFeO is promising for use in water purification owing to its excellent magnetic separation and recovery properties and good resistance to humic acid (HA).

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This article was published in the following journal.

Name: Journal of hazardous materials
ISSN: 1873-3336
Pages: 122528

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