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Title: Large-scale polymeric carbon nanotube membranes with sub–1.27-nm pores

Journal Article · · Science Advances
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [3];  [3]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [4];  [4]; ORCiD logo [4];  [4]; ORCiD logo [3]; ORCiD logo [4]
  1. Mattershift, New York, NY (United States)
  2. Mattershift, New York, NY (United States); Univ. of Connecticut, Storrs, CT (United States)
  3. Univ. of Connecticut, Storrs, CT (United States)
  4. Univ. of Texas, Austin, TX (United States)

We report the first characterization study of commercial prototype carbon nanotube (CNT) membranes consisting of sub–1.27-nm-diameter CNTs traversing a large-area nonporous polysulfone film. The membranes show rejection of NaCl and MgSO4 at higher ionic strengths than have previously been reported in CNT membranes, and specific size selectivity for analytes with diameters below 1.24 nm. The CNTs used in the membranes were arc discharge nanotubes with inner diameters of 0.67 to 1.27 nm. Water flow through the membranes was 1000 times higher than predicted by Hagen-Poiseuille flow, in agreement with previous CNT membrane studies. Ideal gas selectivity was found to deviate significantly from that predicted by both viscous and Knudsen flow, suggesting that surface diffusion effects may begin to dominate gas selectivity at this size scale.

Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
FG02-02ER15362; DGE-1610403
OSTI ID:
1499950
Journal Information:
Science Advances, Vol. 4, Issue 3; ISSN 2375-2548
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 46 works
Citation information provided by
Web of Science

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Cited By (4)

Effect of Confined Spaces in the Catalytic Activity of 1D and 2D Heterogeneous Carbon-Based Catalysts for Synthesis of 1,3,5-Triarylbenzenes: RGO-SO 3 H vs. MWCNTs-SO 3 H journal February 2019
Tuning the permselectivity of polymeric desalination membranes via control of polymer crystallite size journal May 2019
Ultrahigh Ionic Exclusion through Carbon Nanomembranes journal January 2020
Biomimetic and bioinspired membranes for water purification: A critical review and future directions journal December 2018

Figures / Tables (3)


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