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Precise Sub-Angstrom Ion Separation Using Conjugated Microporous Polymer Membranes
- Source :
- ACS Nano. 15:11970-11980
- Publication Year :
- 2021
- Publisher :
- American Chemical Society (ACS), 2021.
-
Abstract
- Polymer membranes typically possess a broad pore-size distribution that leads to much lower selectivity in ion separation when compared to membranes made of crystalline porous materials; however, they are highly desirable because of their easy processability and low cost. Herein, we demonstrate the fabrication of ion-sieving membranes based on a polycarbazole-type conjugated microporous polymer using an easy to scale-up electropolymerization strategy. The membranes exhibited high uniform sub-nanometer pores and a precisely tunable membrane thickness, yielding a high ion-sieving performance with a sub-1 Å size precision. Both experimental results and molecular simulations suggested that the impressive ion-sieving performance of the CMP membranes originates from their uniform and narrow pore-size distribution.
- Subjects :
- Materials science
Fabrication
General Engineering
Synthetic membrane
General Physics and Astronomy
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Ion
Conjugated microporous polymer
Membrane
Chemical engineering
General Materials Science
Angstrom
0210 nano-technology
Porous medium
Selectivity
Subjects
Details
- ISSN :
- 1936086X and 19360851
- Volume :
- 15
- Database :
- OpenAIRE
- Journal :
- ACS Nano
- Accession number :
- edsair.doi.dedup.....d78c61e3f74f117223618720c2b21d7e