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dc.contributor.authorSu, Xiao
dc.contributor.authorKushima, Akihiro
dc.contributor.authorHalliday, Cameron George
dc.contributor.authorZhou, Jian
dc.contributor.authorLi, Ju
dc.contributor.authorHatton, Trevor Alan
dc.date.accessioned2019-03-26T10:43:24Z
dc.date.available2019-03-26T10:43:24Z
dc.date.issued2018-11
dc.date.submitted2018-07
dc.identifier.issn2041-1723
dc.identifier.urihttp://hdl.handle.net/1721.1/121081
dc.description.abstractThe removal of highly toxic, ultra-dilute contaminants of concern has been a primary challenge for clean water technologies. Chromium and arsenic are among the most prevalent heavy metal pollutants in urban and agricultural waters, with current separation processes having severe limitations due to lack of molecular selectivity. Here, we report redox-active metallopolymer electrodes for the selective electrochemical removal of chromium and arsenic. An uptake greater than 100 mg Cr/g adsorbent can be achieved electrochemically, with a 99% reversible working capacity, with the bound chromium ions released in the less harmful trivalent form. Furthermore, we study the metallopolymer response during electrochemical modulation by in situ transmission electron microscopy. The underlying mechanisms for molecular selectivity are investigated through electronic structure calculations, indicating a strong charge transfer to the heavy metal oxyanions. Finally, chromium and arsenic are remediated efficiently at concentrations as low as 100 ppb, in the presence of over 200-fold excess competing salts.en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (ECCS-1610806)en_US
dc.publisherNature Publishing Groupen_US
dc.relation.isversionofhttp://dx.doi.org/10.1038/s41467-018-07159-0en_US
dc.rightsCreative Commons Attribution 4.0 International licenseen_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.sourceNatureen_US
dc.titleElectrochemically-mediated selective capture of heavy metal chromium and arsenic oxyanions from wateren_US
dc.typeArticleen_US
dc.identifier.citationSu, Xiao, Akihiro Kushima, Cameron Halliday, Jian Zhou, Ju Li, and T. Alan Hatton. “Electrochemically-Mediated Selective Capture of Heavy Metal Chromium and Arsenic Oxyanions from Water.” Nature Communications 9, no. 1 (November 8, 2018).en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Chemical Engineeringen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Materials Science and Engineeringen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Nuclear Science and Engineeringen_US
dc.contributor.departmentMassachusetts Institute of Technology. Research Laboratory of Electronicsen_US
dc.contributor.mitauthorSu, Xiao
dc.contributor.mitauthorKushima, Akihiro
dc.contributor.mitauthorHalliday, Cameron George
dc.contributor.mitauthorZhou, Jian
dc.contributor.mitauthorLi, Ju
dc.contributor.mitauthorHatton, Trevor Alan
dc.relation.journalNature Communicationsen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2019-03-04T13:24:41Z
dspace.orderedauthorsSu, Xiao; Kushima, Akihiro; Halliday, Cameron; Zhou, Jian; Li, Ju; Hatton, T. Alanen_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0001-7794-290X
dc.identifier.orcidhttps://orcid.org/0000-0002-7841-8058
dc.identifier.orcidhttps://orcid.org/0000-0002-4558-245X
mit.licensePUBLISHER_CCen_US


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