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.
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 These NPs could be easily withdrawn from water within a few seconds under moderate magnetic field and showed high stability in acid and alkaline aqueous mediums.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
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Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature
Supplementary files
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