Please use this identifier to cite or link to this item: doi:10.22028/D291-28913
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Title: Two-Dimensional Molybdenum Carbide (MXene) with Divacancy Ordering for Brackish and Seawater Desalination via Cation and Anion Intercalation
Author(s): Srimuk, Pattarachai
Halim, Joseph
Lee, Juhan
Tao, Quanzheng
Rosen, Johanna
Presser, Volker
Language: English
Title: ACS sustainable chemistry & engineering
Volume: 6
Issue: 3
Startpage: 3739
Endpage: 3747
Publisher/Platform: ACS
Year of Publication: 2018
Publikation type: Journal Article
Abstract: Ion intercalation materials are emerging as a highly attractive class of electrodes for efficient energy water desalination. Most materials and concepts so far have focused on the removal of cations (especially sodium). Anion intercalation, however, remains poorly investigated in water desalination. We present a study on the capability of Mo1.33C-MXene for removing cations and anions and demonstrate the desalination performance in brackish water and seawater concentrations. Mo1.33C-MXene was prepared via acid treatment of the transition metal carbide MAX phase (Mo2/3Sc1/3)2AlC. Binder-free electrodes were obtained by entangling MXene with carbon nanotubes and tested without the use of any ion exchange membrane at low (5 mM NaCl) and high (600 mM NaCl) salt concentrations. Such electrodes showed a promising desalination performance of 15 mg/g in 600 mM NaCl with high charge efficiency up to 95%. By employing chemical online monitoring of the effluent stream, we separated the cation and anion intercalation capacity of the electrode material.
DOI of the first publication: 10.1021/acssuschemeng.7b04095
URL of the first publication:
Link to this record: hdl:20.500.11880/27812
ISSN: 2168-0485
Date of registration: 17-Sep-2019
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Materialwissenschaft und Werkstofftechnik
Professorship: NT - Prof. Dr. Volker Presser
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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