Polyaniline Nanofiber Electrodes for Reversible Capture and Release of Mercury(II) from Water
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Description
Accepted version
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772.3 KB
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Author(s)
Kim, Yoonseob
Lin, Zhou
Jeon, Intak
Van Voorhis, Troy
Swager, Timothy M
Date Issued
October 2018
Journal
Journal of the American Chemical Society
Publisher
American Chemical Society (ACS)
Citation
Kim, Yoonseob et al. "Polyaniline Nanofiber Electrodes for Reversible Capture and Release of Mercury(II) from Water." Journal of the American Chemical Society 140, 43 (October 2018): 14413–14420 © 2018 American Chemical Society
Version
Author's final manuscript
Abstract
π-Conjugated polyaniline nanofiber networks are an attractive material platform for reversible and selective capture and release of toxic heavy metal ions from water. The nanofiber geometry facilitates fastsorption kinetics, sulfur functionalization of the backbone for improved adsorption, and electrochemical control of the oxidation (charge) state for reversible triggered sorption/desorption of metal ions. These active materials also function as sensors in that the sorption of mercury ions can be detected by analysis of cyclic voltammograms. Calculations of binding energies between polyaniline and metal ions using molecular dynamics and density functional theory support the electrochemically controlled reversible sorption/desorption mechanism. These redox-active materials for removing Hg2+ from water create an attractive system that combines efficiency, capacity, selectivity, and reusability.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1021/jacs.8b09119
