Polystyrene Macroporous Magnetic Nanocomposites Synthesized through Deep Eutectic Solvent-in-Oil High Internal Phase Emulsions and Fe₃O₄ Nanoparticles for Oil Sorption.

Content Provider	Europe PMC
Author	Recio-Colmenares, CarolinaL. Ortíz-Rios, Daniela Pelayo-Vázquez, José B. Moreno-Medrano, Edgar D. Arratia-Quijada, Jenny Torres-Lubian, José R. Huerta-Marcial, Silvia T. Mota-Morales, Josué D. Pérez-García, María G.
Copyright Year	2022
Abstract	In this work, wereport a nonaqueous one-step method to synthesizepolystyrene macroporous magnetic nanocomposites through high internalphase emulsions (HIPEs) formulated with the deep eutectic solvent(DES) composed of urea:choline chloride (U:ChCl, in a 2:1 molar ratio)as the internal phase and co-stabilized with mixtures of Span 60 surfactantand non-functionalized magnetite nanoparticles (Fe3O4 NPs). The porous structure and the magnetic and lipophilicproperties of the nanocomposite materials were easily tailored byvarying the amount of Fe3O4 NPs (0, 2, 5 and10 wt %) and the surfactant Span 60 (0, 5, 10, and 20 wt %) used inthe precursor emulsion. The resultant nanocomposite polyHIPEs exhibithigh sorption capacity toward different oils (hexane, gasoline, andvegetable oil) due to their high porosity, interconnectivity, andhydrophobic surface. It was observed that the oil sorption capacitywas improved when the amount of surfactant decreased and Fe3O4 NPs increased in HIPE formulation. Therefore, polyHIPEformulated with 5 and 10 wt % Span 60 and Fe3O4 NPs, respectively, showed the highest oil sorption capacities of4.151, 3.556, and 3.266 g g–1 for gasoline, hexane,and vegetable oil, respectively. In addition, the magnetic monolithswere reused for more than ten sorption/desorption cycles without losingtheir oil sorption capacity.
Journal	ACS Omega
Volume Number	7
PubMed Central reference number	PMC9245104
Issue Number	25
PubMed reference number	35785308
e-ISSN	24701343
DOI	10.1021/acsomega.2c01836
Language	English
Publisher	American Chemical Society
Publisher Date	2022-06-13
Access Restriction	Open
Rights License	Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). © 2022 The Authors. Published by American Chemical Society
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering