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Title: Water-ion permselectivity of narrow-diameter carbon nanotubes

Abstract

Carbon nanotube (CNT) pores, which mimic the structure of the aquaporin channels, support extremely high water transport rates that make them strong candidates for building artificial water channels and high-performance membranes. Here, we measure water and ion permeation through 0.8-nm-diameter CNT porins (CNTPs)—short CNT segments embedded in lipid membranes—under optimized experimental conditions. Measured activation energy of water transport through the CNTPs agrees with the barrier values typical for single-file water transport. Well-tempered metadynamics simulations of water transport in CNTPs also report similar activation energy values and provide molecular-scale details of the mechanism for water entry into these channels. CNTPs strongly reject chloride ions and show water-salt permselectivity values comparable to those of commercial desalination membranes.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [1];  [4];  [4];  [3]; ORCiD logo [5]; ORCiD logo [3]; ORCiD logo [4]
  1. Materials Science Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
  2. Materials Science Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA., Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Nanjing 211189, China.
  3. Quantum Simulations Group, Materials Science Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
  4. Materials Science Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA., School of Natural Sciences, University of California Merced, Merced, CA 94343, USA.
  5. Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Nanjing 211189, China.
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1826848
Alternate Identifier(s):
OSTI ID: 1712556
Report Number(s):
LLNL-JRNL-799504
Journal ID: ISSN 2375-2548; eaba9966
Grant/Contract Number:  
SC0019112; AC52-07NA27344
Resource Type:
Published Article
Journal Name:
Science Advances
Additional Journal Information:
Journal Name: Science Advances Journal Volume: 6 Journal Issue: 38; Journal ID: ISSN 2375-2548
Publisher:
American Association for the Advancement of Science (AAAS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Li, Yuhao, Li, Zhongwu, Aydin, Fikret, Quan, Jana, Chen, Xi, Yao, Yun-Chiao, Zhan, Cheng, Chen, Yunfei, Pham, Tuan Anh, and Noy, Aleksandr. Water-ion permselectivity of narrow-diameter carbon nanotubes. United States: N. p., 2020. Web. doi:10.1126/sciadv.aba9966.
Li, Yuhao, Li, Zhongwu, Aydin, Fikret, Quan, Jana, Chen, Xi, Yao, Yun-Chiao, Zhan, Cheng, Chen, Yunfei, Pham, Tuan Anh, & Noy, Aleksandr. Water-ion permselectivity of narrow-diameter carbon nanotubes. United States. https://doi.org/10.1126/sciadv.aba9966
Li, Yuhao, Li, Zhongwu, Aydin, Fikret, Quan, Jana, Chen, Xi, Yao, Yun-Chiao, Zhan, Cheng, Chen, Yunfei, Pham, Tuan Anh, and Noy, Aleksandr. Fri . "Water-ion permselectivity of narrow-diameter carbon nanotubes". United States. https://doi.org/10.1126/sciadv.aba9966.
@article{osti_1826848,
title = {Water-ion permselectivity of narrow-diameter carbon nanotubes},
author = {Li, Yuhao and Li, Zhongwu and Aydin, Fikret and Quan, Jana and Chen, Xi and Yao, Yun-Chiao and Zhan, Cheng and Chen, Yunfei and Pham, Tuan Anh and Noy, Aleksandr},
abstractNote = {Carbon nanotube (CNT) pores, which mimic the structure of the aquaporin channels, support extremely high water transport rates that make them strong candidates for building artificial water channels and high-performance membranes. Here, we measure water and ion permeation through 0.8-nm-diameter CNT porins (CNTPs)—short CNT segments embedded in lipid membranes—under optimized experimental conditions. Measured activation energy of water transport through the CNTPs agrees with the barrier values typical for single-file water transport. Well-tempered metadynamics simulations of water transport in CNTPs also report similar activation energy values and provide molecular-scale details of the mechanism for water entry into these channels. CNTPs strongly reject chloride ions and show water-salt permselectivity values comparable to those of commercial desalination membranes.},
doi = {10.1126/sciadv.aba9966},
journal = {Science Advances},
number = 38,
volume = 6,
place = {United States},
year = {Fri Sep 18 00:00:00 EDT 2020},
month = {Fri Sep 18 00:00:00 EDT 2020}
}

Journal Article:
Free Publicly Available Full Text
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https://doi.org/10.1126/sciadv.aba9966

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