Magnetic BaFe12O19 nanofiber filter for effective separation of Fe3O4 nanoparticles and removal of arsenic

Title
Magnetic BaFe12O19 nanofiber filter for effective separation of Fe3O4 nanoparticles and removal of arsenic
Authors
변지혜Hasmukh A. PatelCafer T. Yavuz
Issue Date
2014-12
Publisher
Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology
Citation
VOL 16, NO 12, 2787
Abstract
Magnetic nanoparticles are promising in applications where magnetic separation is intended, although material losses via leaching mechanisms are often inevitable. Magnetic separations with widely available permanent magnets can effectively trap particles, leading to a complete removal of used or waste particles. In this report, we first demonstrate the synthesis of the thinnest (112.7 +/- 16.4 nm) and most magnetic (71.96 emu g(-1)) barium hexaferrite (BaFe12O19, BHF-fridge magnet) via an organic solvent-free electrospinning procedure. When the fibers are then packed into a column, they clearly remove 12 nm magnetite (Fe3O4) nanoparticles quantitatively. The same BHF cartridge also removes more than 99.9 % As-treatedmagnetite nanoparticles at capacities up to 70 times of its weight. As a result, one liter of 150 mu g L-1 As-contaminated water can be purified rapidly at a material cost of less than 2 US cents.
URI
http://pubs.kist.re.kr/handle/201004/70652
ISSN
1388-0764
Appears in Collections:
KIST Publication > Article
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