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).


Journal Details

This article was published in the following journal.

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


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