Effects of anion concentration on ion-transport pressure in nanopores

Taewan KIM; Weiyi LU; Aijie HAN; Venkata K. PUNYAMURTULA; Xi CHEN; Yu QIAO

doi:10.1063/1.3023071

Effects of anion concentration on ion-transport pressure in nanopores

Taewan KIM, Weiyi LU, Aijie HAN, Venkata K. PUNYAMURTULA, Xi CHEN, Yu QIAO^*

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

14 Citations (Scopus)

Abstract

In an experiment on pressure-driven ion transport in nanopores of a zeolite, the anion concentration is varied in a broad range. As the anion concentration is relatively low, its influence on the ion transport pressure, which reflects the system free energy variation rate, is negligible. When the anion concentration is relatively high, it has a pronounced effect on the ion transport pressure, which should be attributed to the unique surface ion structure in the confining nanoenvironment. The testing data also indicate that the effective interfacial tension is highly dependent on the anion size. © 2009 American Institute of Physics.

Original language	English
Article number	13105
Number of pages	4
Journal	Applied Physics Letters
Volume	94
Issue number	1
DOIs	https://doi.org/10.1063/1.3023071
Publication status	Published - 5 Jan 2009
Externally published	Yes

Funding

This study was supported by The National Science Foundation and The Sandia National Laboratory under Grant No. CMS-0623973.

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10.1063/1.3023071

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AB - In an experiment on pressure-driven ion transport in nanopores of a zeolite, the anion concentration is varied in a broad range. As the anion concentration is relatively low, its influence on the ion transport pressure, which reflects the system free energy variation rate, is negligible. When the anion concentration is relatively high, it has a pronounced effect on the ion transport pressure, which should be attributed to the unique surface ion structure in the confining nanoenvironment. The testing data also indicate that the effective interfacial tension is highly dependent on the anion size. © 2009 American Institute of Physics.

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Effects of anion concentration on ion-transport pressure in nanopores

Abstract

Funding

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