Impermeable barrier films and protective coatings based on reduced graphene oxide

By Yang Su, V. Kravets, S. L. Wong, J. Waters, A.K. Geim, R. Nair. Nature Communications, 2014

603 citations recorded by the source corpus.

Flexible barrier films preventing permeation of gases and moistures are important for many industries ranging from food to medical and from chemical to electronic. From this perspective, graphene has recently attracted particular interest because its defect-free monolayers are impermeable to all atoms and molecules. However, it has been proved to be challenging to develop large-area defectless graphene films suitable for industrial use. Here we report barrier properties of multilayer graphitic films made by gentle chemical reduction of graphene oxide laminates with hydroiodic and ascorbic acids. They are found to be highly impermeable to all gases, liquids and aggressive chemicals including, for example, hydrofluoric acid. The exceptional barrier properties are attributed to a high degree of graphitization of the laminates and little structural damage during reduction. This work indicates a close prospect of graphene-based flexible and inert barriers and protective coatings, which can be of interest for numerous applications. Although defect-free graphene is a promising membrane that is impermeable to all gases and liquids, it is difficult to produce large area films for practical applications. Su et al.show that multilayer graphitic films based on reduced graphene oxide can achieve the same goal but on larger scales.

Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/045138846660ab1c75e084c8e5aaa19b3d09b9d8

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In Biomedical Engineering

In Electrical and Electronic Engineering

In Materials Chemistry

Citations in the corpus

Graphene/elastomer nanocomposites (2015, background): “found that the exceptional barrier properties of multilayer graphitic films can be attributed to the high degree of graphitization of the laminates and little structural damage during the reduction process [216].”
Graphene related materials for thermal management (2019, background): “Graphene laminates Graphene laminates have been demonstrated for surface protective, water desalination [164], gas impermeable barrier [165] and electromagnetic interference shielding [166].”