High-performance, recyclable ultrafiltration membranes from P4VP-assisted dispersion of flame-resistive boron nitride nanotubes

Regenerable ultrafiltration membranes were fabricated via filtration of thermally-stable, highly dispersed boron nitride nanotubes (BNNTs). The highly debundled BNNTs were produced by employing judiciously-chosen poly (4-vinylpyridine) (P4VP) as an efficient steric stabilizer. Density functional theory calculations showed strong adsorption energies of P4VP monomers on top of the BNNTs, illustrating the role of P4VP stabilizers. High performance of the BNNT ultrafiltration membranes with large permeation flux was demonstrated by exclusion of polystyrene and gold nanoparticles (similar to 25 nm) with higher than 99% removal efficiency. The BNNT membranes were successfully regenerated and recycled continuously at 450 degrees C due to their excellent mechanical and thermal properties, demonstrating a stark contrast to the membranes from the carbon nanotubes. Our work indicates that unlike the membranes from carbon nanotubes, BNNT membrane can be a promising candidate for the application in cost efficient industrial ultrafiltration.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2018-04
Language
English
Article Type
Article
Keywords

HUMIC SUBSTANCES REMOVAL; GRAPHENE QUANTUM DOTS; NONCOVALENT FUNCTIONALIZATION; DIBLOCK COPOLYMERS; FOULING CONTROL; ORGANIC-MATTER; PARTICLES; WATER; NANOPARTICLES; SURFACTANTS

Citation

JOURNAL OF MEMBRANE SCIENCE, v.551, pp.172 - 179

ISSN
0376-7388
DOI
10.1016/j.memsci.2018.01.030
URI
http://hdl.handle.net/10203/240698
Appears in Collection
CBE-Journal Papers(저널논문)
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