Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/83397
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dc.contributor.authorWang, Yileien
dc.contributor.authorEl-Deen, Ahmed G.en
dc.contributor.authorLi, Pengen
dc.contributor.authorOh, Bernice Hui Linen
dc.contributor.authorGuo, Zanruen
dc.contributor.authorKhin, Mya Myaen
dc.contributor.authorVikhe, Yogesh Shankaren
dc.contributor.authorWang, Jingen
dc.contributor.authorHu, Rebecca G.en
dc.contributor.authorBoom, Remko M.en
dc.contributor.authorKline, Kimberly A.en
dc.contributor.authorBecker, David Lawrenceen
dc.contributor.authorDuan, Hongweien
dc.contributor.authorChan-Park, Mary B.en
dc.date.accessioned2016-09-06T06:10:34Zen
dc.date.accessioned2019-12-06T15:21:35Z-
dc.date.available2016-09-06T06:10:34Zen
dc.date.available2019-12-06T15:21:35Z-
dc.date.issued2015en
dc.identifier.citationWang, Y., El-Deen, A. G., Li, P., Oh, B. H., Guo, Z., Khin, M. M., et al. (2015). High-Performance Capacitive Deionization Disinfection of Water with Graphene Oxide-graft-Quaternized Chitosan Nanohybrid Electrode Coating. ACS Nano, 9(10), 10142-10157.en
dc.identifier.issn1936-0851en
dc.identifier.urihttps://hdl.handle.net/10356/83397-
dc.description.abstractWater disinfection materials should ideally be broad-spectrum-active, nonleachable, and noncontaminating to the liquid needing sterilization. Herein, we demonstrate a high-performance capacitive deionization disinfection (CDID) electrode made by coating an activated carbon (AC) electrode with cationic nanohybrids of graphene oxide-graft-quaternized chitosan (GO-QC). Our GO-QC/AC CDID electrode can achieve at least 99.9999% killing (i.e., 6 log reduction) of Escherichia coli in water flowing continuously through the CDID cell. Without the GO-QC coating, the AC electrode alone cannot kill the bacteria and adsorbs a much smaller fraction (<82.8 ± 1.8%) of E. coli from the same biocontaminated water. Our CDID process consists of alternating cycles of water disinfection followed by electrode regeneration, each a few minutes duration, so that this water disinfection process can be continuous and it only needs a small electrode voltage (2 V). With a typical brackish water biocontamination (with 104 CFU mL–1 bacteria), the GO-QC/AC electrodes can kill 99.99% of the E. coli in water for 5 h. The disinfecting GO-QC is securely attached on the AC electrode surface, so that it is noncontaminating to water, unlike many other chemicals used today. The GO-QC nanohybrids have excellent intrinsic antimicrobial properties in suspension form. Further, the GO component contributes toward the needed surface conductivity of the CDID electrode. This CDID process offers an economical method toward ultrafast, contaminant-free, and continuous killing of bacteria in biocontaminated water. The proposed strategy introduces a green in situ disinfectant approach for water purification.en
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en
dc.description.sponsorshipMOE (Min. of Education, S’pore)en
dc.format.extent45 p.en
dc.language.isoenen
dc.relation.ispartofseriesACS Nanoen
dc.rights© 2016 American Chemical Society. This is the author created version of a work that has been peer reviewed and accepted for publication by ACS Nano, American Chemical Society. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1021/acsnano.5b03763].en
dc.subjectWater disinfectionen
dc.subjectCapacitive deionizationen
dc.titleHigh-Performance Capacitive Deionization Disinfection of Water with Graphene Oxide-graft-Quaternized Chitosan Nanohybrid Electrode Coatingen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Chemical and Biomedical Engineeringen
dc.contributor.schoolSchool of Biological Sciencesen
dc.contributor.schoolLee Kong Chian School of Medicine (LKCMedicine)en
dc.contributor.researchSingapore Centre for Environmental Life Sciences Engineeringen
dc.identifier.doi10.1021/acsnano.5b03763en
dc.description.versionAccepted versionen
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item.grantfulltextopen-
Appears in Collections:LKCMedicine Journal Articles
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