Exceptional Water Desalination Performance with Anion-Selective Electrodes

Antony C. Arulrajan, Deepika L. Ramasamy, Mika Sillanpää, Albert van der Wal, P.M. Biesheuvel, Slawomir Porada, Jouke E. Dykstra

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)

Abstract

Capacitive deionization (CDI) typically uses one porous carbon electrode that is cation adsorbing and one that is anion adsorbing. In 2016, Smith and Dmello proposed an innovative CDI cell design based on two cation-selective electrodes and a single anion-selective membrane, and thereafter this design was experimentally validated by various authors. In this design, anions pass through the membrane once, and desalinated water is continuously produced. In the present work, this idea is extended, and it is experimentally shown that also a choice for anion-selective electrodes, in combination with a cation-selective membrane, leads to a functional cell design that continuously desalinates water. Anion-selective electrodes are obtained by chemical modification of the carbon electrode with (3-aminopropyl)triethoxysilane. After chemical modification, the activated carbon electrode shows a substantial reduction of the total pore volume and Brunauer–Emmett–Teller (BET) surface area, but nevertheless maintains excellent CDI performance, which is for the first time that a low-porosity carbon electrode is demonstrated as a promising material for CDI.

Original languageEnglish
Article number1806937
JournalAdvanced Materials
Volume31
Issue number10
Early online date9 Jan 2019
DOIs
Publication statusPublished - Mar 2019

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Desalination
Anions
Negative ions
Electrodes
Water
Cations
Carbon
Positive ions
Chemical modification
Membranes
Activated carbon
Porosity

Keywords

  • anion-selective electrodes
  • capacitive deionization
  • water desalination

Cite this

Arulrajan, A. C., Ramasamy, D. L., Sillanpää, M., van der Wal, A., Biesheuvel, P. M., Porada, S., & Dykstra, J. E. (2019). Exceptional Water Desalination Performance with Anion-Selective Electrodes. Advanced Materials, 31(10), [1806937]. https://doi.org/10.1002/adma.201806937
Arulrajan, Antony C. ; Ramasamy, Deepika L. ; Sillanpää, Mika ; van der Wal, Albert ; Biesheuvel, P.M. ; Porada, Slawomir ; Dykstra, Jouke E. / Exceptional Water Desalination Performance with Anion-Selective Electrodes. In: Advanced Materials. 2019 ; Vol. 31, No. 10.
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abstract = "Capacitive deionization (CDI) typically uses one porous carbon electrode that is cation adsorbing and one that is anion adsorbing. In 2016, Smith and Dmello proposed an innovative CDI cell design based on two cation-selective electrodes and a single anion-selective membrane, and thereafter this design was experimentally validated by various authors. In this design, anions pass through the membrane once, and desalinated water is continuously produced. In the present work, this idea is extended, and it is experimentally shown that also a choice for anion-selective electrodes, in combination with a cation-selective membrane, leads to a functional cell design that continuously desalinates water. Anion-selective electrodes are obtained by chemical modification of the carbon electrode with (3-aminopropyl)triethoxysilane. After chemical modification, the activated carbon electrode shows a substantial reduction of the total pore volume and Brunauer–Emmett–Teller (BET) surface area, but nevertheless maintains excellent CDI performance, which is for the first time that a low-porosity carbon electrode is demonstrated as a promising material for CDI.",
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Arulrajan, AC, Ramasamy, DL, Sillanpää, M, van der Wal, A, Biesheuvel, PM, Porada, S & Dykstra, JE 2019, 'Exceptional Water Desalination Performance with Anion-Selective Electrodes' Advanced Materials, vol. 31, no. 10, 1806937. https://doi.org/10.1002/adma.201806937

Exceptional Water Desalination Performance with Anion-Selective Electrodes. / Arulrajan, Antony C.; Ramasamy, Deepika L.; Sillanpää, Mika; van der Wal, Albert; Biesheuvel, P.M.; Porada, Slawomir; Dykstra, Jouke E.

In: Advanced Materials, Vol. 31, No. 10, 1806937, 03.2019.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Exceptional Water Desalination Performance with Anion-Selective Electrodes

AU - Arulrajan, Antony C.

AU - Ramasamy, Deepika L.

AU - Sillanpää, Mika

AU - van der Wal, Albert

AU - Biesheuvel, P.M.

AU - Porada, Slawomir

AU - Dykstra, Jouke E.

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AB - Capacitive deionization (CDI) typically uses one porous carbon electrode that is cation adsorbing and one that is anion adsorbing. In 2016, Smith and Dmello proposed an innovative CDI cell design based on two cation-selective electrodes and a single anion-selective membrane, and thereafter this design was experimentally validated by various authors. In this design, anions pass through the membrane once, and desalinated water is continuously produced. In the present work, this idea is extended, and it is experimentally shown that also a choice for anion-selective electrodes, in combination with a cation-selective membrane, leads to a functional cell design that continuously desalinates water. Anion-selective electrodes are obtained by chemical modification of the carbon electrode with (3-aminopropyl)triethoxysilane. After chemical modification, the activated carbon electrode shows a substantial reduction of the total pore volume and Brunauer–Emmett–Teller (BET) surface area, but nevertheless maintains excellent CDI performance, which is for the first time that a low-porosity carbon electrode is demonstrated as a promising material for CDI.

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Arulrajan AC, Ramasamy DL, Sillanpää M, van der Wal A, Biesheuvel PM, Porada S et al. Exceptional Water Desalination Performance with Anion-Selective Electrodes. Advanced Materials. 2019 Mar;31(10). 1806937. https://doi.org/10.1002/adma.201806937