Low-density three-dimensional foam using self-reinforced hybrid two-dimensional atomic layers

Soumya Vinod, Chandra Sekhar Tiwary, Pedro Alves Da Silva Autreto, Jaime Taha-Tijerina, Sehmus Ozden, Alin Cristian Chipara, Robert Vajtai, Douglas S. Galvao, Tharangattu N. Narayanan, Pulickel M. Ajayan

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73 Citations (Scopus)

Abstract

Low-density nanostructured foams are often limited in applications due to their low mechanical and thermal stabilities. Here we report an approach of building the structural units of three-dimensional (3D) foams using hybrid two-dimensional (2D) atomic layers made of stacked graphene oxide layers reinforced with conformal hexagonal boron nitride (h-BN) platelets. The ultra-low density (1/400 times density of graphite) 3D porous structures are scalably synthesized using solution processing method. A layered 3D foam structure forms due to presence of h-BN and significant improvements in the mechanical properties are observed for the hybrid foam structures, over a range of temperatures, compared with pristine graphene oxide or reduced graphene oxide foams. It is found that domains of h-BN layers on the graphene oxide framework help to reinforce the 2D structural units, providing the observed improvement in mechanical integrity of the 3D foam structure. © 2014 Macmillan Publishers Limited.
Original languageEnglish
JournalNature Communications
DOIs
Publication statusPublished - 29 Jul 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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    Vinod, S., Tiwary, C. S., Da Silva Autreto, P. A., Taha-Tijerina, J., Ozden, S., Chipara, A. C., Vajtai, R., Galvao, D. S., Narayanan, T. N., & Ajayan, P. M. (2014). Low-density three-dimensional foam using self-reinforced hybrid two-dimensional atomic layers. Nature Communications. https://doi.org/10.1038/ncomms5541