Journal
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
Volume 13, Issue 3, Pages 563-573Publisher
SPRINGER
DOI: 10.1007/s11705-018-1784-x
Keywords
nanomagnetic POSS; surface polymerization; thiol-ene reaction; adsorbent; water treatment
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Funding
- research council of the University of Tabriz
- Iran Science Elite Federation (ISEF)
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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 m(2)center dot 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 These NPs could be easily withdrawn from water within a few seconds under moderate magnetic field and showed high stability in acid and alkaline aqueous mediums.
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