Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 496731
Title High-Performance Capacitive Deionization Disinfection of Water with Graphene Oxide-graft-Quaternized Chitosan Nanohybrid Electrode Coating
Author(s) Wang, Yilei; El-Deen, A.G.; Li, Peng; Oh, B.H.L.; Guo, Zanru; Khin, Mya Mya; Vikhe, Y.S.; Wang, Jing; Hu, R.G.; Boom, R.M.; Kline, K.A.; Becker, D.L.; Duan, Hongwei; Chan-Park, M.B.
Source ACS Nano 9 (2015)10. - ISSN 1936-0851 - p. 10142 - 10157.
DOI https://doi.org/10.1021/acsnano.5b03763
Department(s) Food Process Engineering
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2015
Keyword(s) antimicrobial - capacitive deionization - cationic - contact-active - graphene oxide - quaternary chitosan - water disinfection
Abstract

Water 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 (4 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.

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