Deep eutectic solvent functionalized graphene oxide nanofiltration membranes with superior water permeance and dye desalination performance

Mehrabi, Novin; Lin, Haiqing; Aich, Nirupam

doi:10.1016/j.cej.2021.128577

Cited by 64 publications

(22 citation statements)

References 65 publications

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“…One of the key operational parameters is the additional MHC concentration in the UF feed water. Conventional hydrophilic coating involving a "one-time" surface modification of the membrane has the disadvantage that the coating will delaminate or peel (separate) from the membrane some time later [20,21]; In contrast, the coating arising from continuously dosing MHC in the influent water can maintain dynamic stability, as long as the concentration of MHC is sufficient to achieve an equilibrium between the coating formation and peeling/separation. Since excessive biopolymer-based material may lead to additional membrane blockage and rapid fouling [22], it is important to control and minimize the MHC concentration.…”

Section: Introductionmentioning

confidence: 99%

Application of ultra-low concentrations of moderately-hydrophobic chitosan for ultrafiltration membrane fouling mitigation

Zhao

et al. 2021

Journal of Membrane Science

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Section: Introductionmentioning

confidence: 99%

Application of ultra-low concentrations of moderately-hydrophobic chitosan for ultrafiltration membrane fouling mitigation

Zhao

et al. 2021

Journal of Membrane Science

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“…6d and Table S2. Except the exciting rejection rate, the ZnO/rGO membranes exhibit much higher water permeance than those of the GO-based membranes reported so far (generally less than 80 L m − 2 h − 1 bar − 1 ) [41][42][43][44][45][46][47][48][49][50][51].…”

Section: Resultsmentioning

confidence: 99%

General Synthesis of Ultrafine Metal Oxide/Reduced Graphene Oxide Nanocomposites for Ultrahigh-Flux Nanofiltration Membrane

Zhang¹,

Xu²,

Xie³

et al. 2021

Preprint

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Graphene-based membranes have great potential to revolutionize nanofiltration technology, but achieving high solute rejections at high water flux remains extremely challenging. Herein, a family of ultrafine metal oxide/reduced graphene oxide (rGO) nanocomposites are synthesized through a heterogenous nucleation and diffusion-controlled growth process for dye nanofiltration. The synthesis is based on the utilization of oxygen functional groups on GO surface as preferential active sites for heterogeneous nucleation, leading to the formation of sub-3nm size, monodispersing as well as high-density loading of metal oxide nanoparticles. The anchored ultrafine nanoparticles could inhibit the wrinkling of the rGO nanosheet, forming highly stable colloidal solutions for solution-processing fabrication of nanofiltration membranes. By functioning as pillars, the nanoparticles remarkably increase both vertical interlayer spacing and lateral tortuous paths of the rGO membranes, offering an unprecedented water permeability of 225 L m− 2 h− 1 bar − 1 and a high selectivity up to 98% in the size-exclusion separation of methyl blue.

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“…Similar systems have been synthesized for the separation of sodium sulfate, rhodamine B, and acid from aqueous solutions [48]. Functionalization of the surface of graphene with choline chloride and ethylene glycol-based novel deep eutectic solvent led to a better interaction between graphene and dye (Congo Red, Methyl Blue, Evan Blue, Direct Red) using a polyethersulfone membrane as support [49]. Anionic colorants, Direct black 38, Xylenol orange, and Pumiceau S, were removed using phosphorylated chitosan-modified Fig.…”

Section: Performances Of Graphene-based Composite Nanofiltration Membranesmentioning

confidence: 99%

Graphene-based composite membranes for nanofiltration: performances and future perspectives

Voicu

Thakur

2021

emergent mater.

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Nanofiltration is one of the most widely used membrane processes for water purification with high practical value because of a large number of chemical species that are separated through this process. Usually, for nanofiltration, high energy–consuming operations are involved including the generation of enough pressure for the rejection of jumps and lower molecular weight chemicals at the surface of the membrane. Recent developments in the synthesis of nanocomposite membranes with graphene and graphene derivatives have led to an increase in energy requirements and the increase in membranes performances. In the present review, we have presented the recent advances in the field of graphene-based composite membranes for nanofiltration with applications for both types of based solvents—aqueous solutions and organic solvents. The presentation will be focused especially on the performances of membranes and applications of these materials for the rejection of salts (Na+, Mg2+), heavy metals (Li2+), and lower molecular weight organic compounds (methylene blue, Congo red, Direct Red, Methyl orange, Reactive green 13, etc.). Modern synthesis methods like interfacial polymerization for obtaining thin-film composite nanofiltration membranes are also presented.

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Deep eutectic solvent functionalized graphene oxide nanofiltration membranes with superior water permeance and dye desalination performance

Cited by 64 publications

References 65 publications

Application of ultra-low concentrations of moderately-hydrophobic chitosan for ultrafiltration membrane fouling mitigation

Application of ultra-low concentrations of moderately-hydrophobic chitosan for ultrafiltration membrane fouling mitigation

General Synthesis of Ultrafine Metal Oxide/Reduced Graphene Oxide Nanocomposites for Ultrahigh-Flux Nanofiltration Membrane

Graphene-based composite membranes for nanofiltration: performances and future perspectives

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