Cube-octameric silsesquioxane (POSS)-capped magnetic iron oxide nanoparticles for the efficient removal of methylene blue
Ali Akbari , Nasser Arsalani , Bagher Eftekhari-Sis , Mojtaba Amini , Gholamreza Gohari , Esmaiel Jabbari
Front. Chem. Sci. Eng. ›› 2019, Vol. 13 ›› Issue (3) : 563 -573.
Cube-octameric silsesquioxane (POSS)-capped magnetic iron oxide nanoparticles for the efficient removal of methylene blue
Octavinyl polyhedral oligomeric silsesquioxane (POSS) was polymerized on the surface of Fe3O4 nanoparticles (NPs) and then the NPs were functionalized with carboxylic acid groups using thiol-ene click reactions with thioglycolic acid. The as-prepared Fe3O4@POSS-COOH magnetic hybrid NPs had mesoporous structures with an average particle diameter of 15 nm and a relatively high specific surface area of 447 m2∙g−1. Experimental results showed that 4 mg of Fe3O4@POSS-COOH NPs efficiently adsorbed and removed methylene blue from water at 5 min. This is due to the presence of both carboxylic acid and pendant vinyl groups on the Fe3O4@POSS-COOH NPs. These NPs could be easily withdrawn from water within a few seconds under moderate magnetic field and showed high stability in acid and alkaline aqueous mediums.
nanomagnetic POSS / surface polymerization / thiol-ene reaction / adsorbent / water treatment
Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature
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