Novel porous magnetic nanospheres functionalized by ß-cyclodextrin polymer and its application in organic pollutants from aqueous solution.
Environ Pollut
; 250: 639-649, 2019 Jul.
Article
em En
| MEDLINE
| ID: mdl-31035146
ABSTRACT
Magnetic ß-cyclodextrin (ß-CD) porous polymer nanospheres (P-MCD) was fabricated by one-pot solvent thermal method using ß-CD immobilized Fe3O4 magnetic nanoparticles with tetrafluoroterephthalonitrile as the monomer. Compared with the ß-CD polymerization method reported in the literature,_ENREF_1 the synthetic route is effective and simple, thereby overcoming the harsh conditions that require nitrogen protection and always maintain anhydrous and oxygen-free. Moreover, the immobilization of ß-CD on magnetic nanoparticles is combined with the cross-linking polymerization of the cross-linker, leading to a good synergistic effect on the removal of contaminants. Meanwhile, the dispersibility of the magnetic carrier enhances the dispersion of the ß-CD porous polymer in the aqueous phase, and improves the inclusion adsorption performance and the adsorption process. P-MCD exhibited superior adsorption capacity and fast kinetics to MB. The maximum adsorption capacity of MB for P-MCD was 305.8â¯mgâ¯g -1, which is more than ß-CD modified Fe3O4 magnetic nanoparticles (Fe3O4@ß-CD). Moreover, the material had a short equilibrium time (5â¯min) for MB, high recovery and good recyclability (the adsorption efficiency was still above 86% after five repeated uses).
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Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
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Purificação da Água
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Beta-Ciclodextrinas
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Nanosferas
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Magnetismo
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article