Impermeable barrier films and protective coatings based on reduced graphene oxide

Su, Yang; Kravets, V. G.; Wong, Swee Liang; Waters, John; Geǐm, A. K.; Nair, R. R.

doi:10.1038/ncomms5843

Cited by 559 publications

(416 citation statements)

References 34 publications

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“…For example, Su et al 151 deposited freestanding GO and r-GO lms with a thickness of $0.5 mm and the authors conrmed that the bare GO membrane is permeable for water while all the r-GO membranes are almost impermeable (the results are shown in Fig. 12).…”

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confidence: 85%

Separation and purification using GO and r-GO membranes

et al. 2018

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Many materials with varied characteristics have been used for water purification and separation applications. Recently discovered graphene oxide (GO), a two-dimensional derivative of graphene has been considered as a promising membrane material for water purification due to its excellent hydrophilicity, high water permeability, and excellent ionic/molecular separation properties. This review is focussed on the possible versatile applicability of GO membranes. It is also known that selective reduction of GO results in membranes with a pore size of $0.35 nm, ideally suited for desalination applications. This article presents the applicability of graphene-based membranes for multiple separation applications. This is indeed the first review article outlining a comparison of GO and r-GO membranes and discussing the suitability for applications based on the porosity of the membranes.

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confidence: 85%

Separation and purification using GO and r-GO membranes

et al. 2018

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“…Potential applications are food and pharmaceutical packaging [73,77,78,118] as well as anti-corrosive protective coatings [119,120]. Devices, such as liquid crystal displays and organic lightemitting diodes (OLEDs), are very sensitive to moisture and oxygen.…”

Section: Applicationsmentioning

confidence: 99%

A review of the water barrier properties of polymer/clay and polymer/graphene nanocomposites

Tan

Thomas

2016

Journal of Membrane Science

282

140

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This paper reviews the literature on moisture barrier properties of polymer/clay and polymer/graphene-based nanocomposites. The various models proposed to predict the effects of nanofillers in reducing water vapour permeability through polymers are outlined. These models are based on a range of different factors such as; tortuosity, geometry, platelet stacking, orientation, polymer chain confinement and plasticization.Published experimental studies of water vapour permeability in both polymer/clay and polymer/graphene nanocomposites are then reviewed. The extent to which the models are validated by the results of these studies is discussed, together with the degree to which the potential for water barrier improvement in polymer nanocomposites has been realised.

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“…Barrier membranes based on (exfoliated) graphene or graphene oxide flakes inevitably have to be much thicker to compensate for the many possible permeation pathways, 24,25 which negates at least part of the advantages that 2D materials can offer. It remains unclear if high-quality few-layer graphene films grown directly by CVD would show significantly lower WVTRs.…”

Section: Introductionmentioning

confidence: 99%

Graphene-based nanolaminates as ultra-high permeation barriers

et al. 2017

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Permeation barrier films are critical to a wide range of applications. In particular, for organic electronics and photovoltaics not only ultra-low permeation values are required but also optical transparency. A laminate structure thereby allows synergistic effects between different materials. Here, we report on a combination of chemical vapor deposition (CVD) and atomic layer deposition (ALD) to create in scalable fashion few-layer graphene/aluminium oxide-based nanolaminates. The resulting~10 nm contiguous, flexible graphene-based films are >90% optically transparent and show water vapor transmission rates below 7 × 10 −3 g/m 2 /day measured over areas of 5 × 5 cm 2 . We deploy these films to provide effective encapsulation for organic light-emitting diodes (OLEDs) with measured half-life times of 880 h in ambient.

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Impermeable barrier films and protective coatings based on reduced graphene oxide

Cited by 559 publications

References 34 publications

Separation and purification using GO and r-GO membranes

Separation and purification using GO and r-GO membranes

A review of the water barrier properties of polymer/clay and polymer/graphene nanocomposites

Graphene-based nanolaminates as ultra-high permeation barriers

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