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Issue 30, 2016
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Multifunctional magnetic oleic acid-coated MnFe2O4/polystyrene Janus particles for water treatment

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Abstract

In this work, we have demonstrated the multifunctional magnetic oleic acid-coated MnFe2O4/polystyrene (MnFe2O4@OA/PS) Janus particles for eliminating multiple contaminants from water. The MnFe2O4@OA/PS Janus particles are simply prepared on a large scale by utilizing the phase separation of oleic acid coated MnFe2O4 nanoparticles (MnFe2O4@OA NPs) and polystyrene (PS) in evaporating n-hexane/chloroform droplets. The as-prepared MnFe2O4@OA/PS Janus particles can effectively integrate three intriguing properties, including the instinctive surface amphipathicity, excellent magnetic properties and high catalytic activity. Hence, they not only can act as particle surfactants to encapsulate and magnetically separate oil droplets from water, but also can efficiently degrade organic dyes in water by utilizing hydroxyl radicals generated from the active Fenton reaction between MnFe2O4 and H2O2. The integrated removal of oil and organic dyes by using the multifunctional MnFe2O4@OA/PS Janus particles exhibits obvious advantages including simple procedures, low cost and easy operation. The MnFe2O4@OA/PS Janus particles developed in this work may inspire novel strategies for the practical applications of Janus particles in the water treatment for multiple-contaminant removal due to their versatile components as well as the facile, large-scale fabrication approach.

Graphical abstract: Multifunctional magnetic oleic acid-coated MnFe2O4/polystyrene Janus particles for water treatment

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Publication details

The article was received on 13 May 2016, accepted on 21 Jun 2016 and first published on 28 Jun 2016


Article type: Paper
DOI: 10.1039/C6TA04010A
Citation: J. Mater. Chem. A, 2016,4, 11768-11774
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    Multifunctional magnetic oleic acid-coated MnFe2O4/polystyrene Janus particles for water treatment

    D. Pan, F. Mou, X. Li, Z. Deng, J. Sun, L. Xu and J. Guan, J. Mater. Chem. A, 2016, 4, 11768
    DOI: 10.1039/C6TA04010A

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