Polyamide membranes with nanoscale ordered structures for fast permeation and highly selective ion-ion separation
China Agricultural University · National University of Singapore · +2 more institutions
Abstract
Abstract Fast permeation and effective solute-solute separation provide the opportunities for sustainable water treatment, but they are hindered by ineffective membranes. We present here the construction of a nanofiltration membrane with fast permeation, high rejection, and precise Cl - /SO 4 2- separation by spatial and temporal control of interfacial polymerization via graphitic carbon nitride (g-C 3 N 4 ). The g-C 3 N 4 nanosheet binds preferentially with piperazine and tiles the water-hexane interface as revealed by molecular dynamics studies, thus lowering the diffusion rate of PIP by one order of magnitude and restricting its diffusion pathways towards the hexane phase. As a result, membranes with…
Citation impact
- FWCI
- 27.36
- Percentile
- 100%
- References
- 44
Authors
10Topics & keywords
- Permeation
- Membrane
- Nanofiltration
- Permeance
- Interfacial polymerization
- Materials science
- Chemical engineering
- Molecular dynamics