Abstract
An isoporous membrane with strictly controlled pore size, shape and distribution could provide an efficient, precise and mild sieving of particles in nanotechnology and biomedical applications. However there is a lack of highly porous polymeric membranes combining isoporosity and high permeance in the range below 500 nm. Track-etched membranes are practically the only commercial option. Membranes prepared by phase inversion typically have a broad pore size distribution. Most nanofabrication methods have limited the preparation of membranes with pores in the micrometer range. In this work, we present a nanotechnology-based fabrication methodology to manufacture a stable and flexible nanoporous polymeric membrane with 300 nm isopores using UV nanoimprint lithography. The highly porous membrane has a pore density of 4 × 109 pores per cm2 and stable permeance of 108 000 L m−2 h−1 bar−1. Uniform ZIF-8 nanoparticles were synthesized and the isoporous membrane successfully demonstrated as high as 100% rejection and size-based sieving performance of nanoparticles.
Original language | English (US) |
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Pages (from-to) | 1119-1124 |
Number of pages | 6 |
Journal | Nanoscale Advances |
Volume | 4 |
Issue number | 4 |
DOIs | |
State | Published - Feb 21 2022 |
ASJC Scopus subject areas
- Bioengineering
- Atomic and Molecular Physics, and Optics
- General Chemistry
- General Materials Science
- General Engineering