Fabrication of assembled membrane from malonate-functionalized graphene and evaluation of its permeation performance

Le, Linh Hoang; Trinh, Dai Xuan; Trung, Nguyen Ba; Tran, Thuy Phuong Nhat

doi:10.1016/j.carbon.2016.12.029

Cited by 6 publications

(1 citation statement)

References 32 publications

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“…For instance, a high surface atomic density and a low corrugation explain a nearly friction-less flow in nanochannels of multiwall nanotubes and graphitic materials [11,12,13]. Stacked graphene oxide offers ideal capillaries for facile transport of monolayered water molecules as horizontally spanned interlayer spaces of ~7 Å [14], while a disorder of the stacking offers a vertical pathway for the permeation [15]. Fast transportation with molecular-level selectivity through well-defined channels makes nanochannel materials a promising candidate to address the permeability–selectivity tradeoff problem of the conventional membranes.…”

Section: Introductionmentioning

confidence: 99%

Design of a Semi-Continuous Selective Layer Based on Deposition of UiO-66 Nanoparticles for Nanofiltration

et al. 2018

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Deposition of UiO-66 metal–organic framework nanoparticles onto a porous polymer support is a promising approach to designing highly-permeable, size-selective, flexible, and stable membranes for water filtration. In this article, a series of UiO-66 nanoparticles having different particle sizes were synthesized and employed to prepare UiO-66-deposited composite membranes. It was found that the size of the UiO-66 nanoparticles had great influences on the performance of the composite membranes for the filtration of a methylene blue aqueous solution. The deposition of smaller nanoparticles afforded a selective layer having a greater external surface area and narrower interparticle voids. These features made the deposition of smaller nanoparticles more advantageous in terms of the flux and rejection, while the deposition of greater nanoparticles afforded a selective layer more tolerant for fouling. Bimodal composite membranes were prepared by depositing mixed UiO-66 nanoparticles of smaller and bigger sizes. These membranes successfully combined the advantages of nanoparticles of a distinct size.

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