Extraordinary water adsorption characteristics of graphene oxide

Lian, Boyue; Luca, Sergio De; You, Yi; Alwarappan, Subbiah; Yoshimura, Masamichi; Sahajwalla, Veena; Smith, Sean C.; Leslie, Greg; Joshi, Rakesh

doi:10.1039/c8sc00545a

Cited by 133 publications

(90 citation statements)

References 39 publications

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“…32 Although the interlayer spacing under dry conditions differs slightly (see Table S2 †), the similar swelling behavior suggests that the maximum water uptake is nearly identical for all membranes (with the exception of TGO*), which is already documented for modied Hummers' GO. 50 It is noteworthy however to recall that the stability of F-TGO and SF-TGO in the wet state is superior to that of HGO and TGO (Fig. S2 †), despite the similar interlayer distances.…”

Section: Resultsmentioning

confidence: 91%

Evaluation of fluorine and sulfonic acid co-functionalized graphene oxide membranes under hydrogen proton exchange membrane fuel cell conditions

Sandström

Annamalai

Boulanger

et al. 2019

Sustainable Energy Fuels

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Section: Resultsmentioning

confidence: 91%

Evaluation of fluorine and sulfonic acid co-functionalized graphene oxide membranes under hydrogen proton exchange membrane fuel cell conditions

Sandström

Annamalai

Boulanger

et al. 2019

Sustainable Energy Fuels

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“…Recently, graphene oxide (GO) has become a promising membrane material owing to its impressive separation performance [22][23][24][25]. GO membranes possess ultrafast water transport properties and extraordinary water adsorption characteristics [26,27]. GO sheets have also been proven to be effective nanofillers to improve the overall performance of polymeric UF membranes, due to their high aspect ratio, low density, easy functionalization and abundance of oxygen containing functional groups [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide quantum dots embedded polysulfone membranes with enhanced hydrophilicity, permeability and antifouling performance

Zhao

et al. 2019

Sci. China Mater.

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Graphene oxide (GO) has been demonstrated to be an effective hydrophilic nanofiller to modify the polymeric membranes when forming a mixed matrix structure. GO quantum dots (QDs) are promising candidates to fully exert the rich oxygen containing functional groups due to their unique size induced edge effects. In this work, GO QDs modified polysulfone (PSF) ultrafiltration (UF) membranes were prepared by phase inversion method with various GO QDs loadings (0.1-0.5 wt.%). A proper amount of GO QDs addition led to a more porous and hydrophilic membrane structure. With 0.3 wt.% GO QDs, the membranes showed a 60% increase in permeability (130.54 vs. 82.52 LMH bar -1 ).The pristine PSF membranes had a complete cutoff of bovine serum albumin molecules and it was well maintained with GO QDs incorporated. The membranes with 0.5 wt.% GO QDs exhibited the highest flux recovery ratio of 89.7% and the lowest irreversible fouling of 10.3% (54.5% and 33.3% for the pristine PSF membranes). Our results proved that GO QDs can function as effective nanofillers to enhance the hydrophilicity, permeability and antifouling performance of PSF UF membranes.

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“…Fortunately, the interaction between the oxygen‐functional groups on graphene oxide sheets and cations have been extensively studied, [ 36,37 ] as it is fundamental for applications such as energy storage and water purification. [ 38–40 ] Considering the value of transition metals for N 2 adsorption, we hypothesize that the incorporation of these metals into graphene oxide‐based membranes could enhance selectivity to N 2 . To test this hypothesis, we study the Fe and Cr incorporated reduced graphene oxide (rGO) membranes for gas separation.…”

Section: Figurementioning

confidence: 99%

Effective Separation of CO₂ Using Metal‐Incorporated rGO Membranes

et al. 2020

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Permeance indicates how fast the gas molecule transports through the membrane, usually expressed in gas permeation unit (GPU, 1 GPU = 10 −6 cm 3 (STP) cm −2 scmHg −1 ), while selectivity represents how efficiently the gas is separated from the mixture during the transportation. The nature of molecular transportation in membranes depends on the porosity and type of membrane materials, which can be understood by using mechanisms based on solution-diffusion, size-dependent molecular sieving, Knudsen diffusion, and Poiseuille flow. [3] Materials such as zeolites, [4][5][6] metalorganic frameworks (MOFs), [7][8][9] and carbon-based constituents [10][11][12][13][14] in the form of membranes have been intensively studied as gas barriers in the past. These materials are featured by tuneable nanosized pores, which provide sites for gas

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Extraordinary water adsorption characteristics of graphene oxide

Abstract: The laminated structure of graphene oxide (GO) confers unique interactions with water molecules which may be utilised in a range of applications that require materials with tuneable hygroscopic properties.

Cited by 133 publications

References 39 publications

Evaluation of fluorine and sulfonic acid co-functionalized graphene oxide membranes under hydrogen proton exchange membrane fuel cell conditions

Evaluation of fluorine and sulfonic acid co-functionalized graphene oxide membranes under hydrogen proton exchange membrane fuel cell conditions

Graphene oxide quantum dots embedded polysulfone membranes with enhanced hydrophilicity, permeability and antifouling performance

Effective Separation of CO₂ Using Metal‐Incorporated rGO Membranes

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Extraordinary water adsorption characteristics of graphene oxide

Abstract: The laminated structure of graphene oxide (GO) confers unique interactions with water molecules which may be utilised in a range of applications that require materials with tuneable hygroscopic properties.

Cited by 133 publications

References 39 publications

Evaluation of fluorine and sulfonic acid co-functionalized graphene oxide membranes under hydrogen proton exchange membrane fuel cell conditions

Evaluation of fluorine and sulfonic acid co-functionalized graphene oxide membranes under hydrogen proton exchange membrane fuel cell conditions

Graphene oxide quantum dots embedded polysulfone membranes with enhanced hydrophilicity, permeability and antifouling performance

Effective Separation of CO2 Using Metal‐Incorporated rGO Membranes

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Effective Separation of CO₂ Using Metal‐Incorporated rGO Membranes