Large-scale polymeric carbon nanotube membranes with sub–1.27-nm pores
- Mattershift, New York, NY (United States)
- Mattershift, New York, NY (United States); Univ. of Connecticut, Storrs, CT (United States)
- Univ. of Connecticut, Storrs, CT (United States)
- 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
Web of Science
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 |
Similar Records
Ion Exclusion by Sub 2-nm Carbon Nanotube Pores
Ultrabreathable and protective membranes with sub-5 nm carbon nanotube pores