Highly regenerable mussel-inspired Fe3O 4@Polydopamine-Ag core-shell microspheres as catalyst and adsorbent for methylene blue removal

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DOIResolve DOI: http://doi.org/10.1021/am501632f
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TypeArticle
Journal titleACS Applied Materials and Interfaces
ISSN1944-8252
Volume6
Issue11
Pages88458852; # of pages: 8
SubjectAdsorption; Aromatic compounds; Microspheres; Molluscs; Water treatment; Cyclic stability; Dye removal; Polydopamine; regeneration ability; Situ reduction; Silver
AbstractWe report a facile method to synthesize Fe3O 4@polydopamine (PDA)-Ag core-shell microspheres. Ag nanoparticles (NPs) are deposited on PDA surfaces via in situ reduction by mussel-inspired PDA layers. High catalytic activity and fast adsorption of a model dye methylene blue (MB) at different pH values are achieved mainly due to the presence of monodisperse Ag NPs and electrostatic interactions between PDA and MB. The as-prepared Fe3O4@PDA-Ag microspheres also show high cyclic stability (>27 cycles), good acid stability, and fast regeneration ability, which can be achieved efficiently within several minutes by using NaBH4 as the desorption agent, showing great potentials in a wide range of applications. © 2014 American Chemical Society.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); National Institute for Nanotechnology (NINT-INNT)
Peer reviewedYes
NPARC number21272244
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Record identifier9fd7ef8b-3383-4fd9-a759-56740e7373db
Record created2014-07-23
Record modified2016-05-09
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