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

Resultado de la investigaciónrevisión exhaustiva

77 Citas (Scopus)

Resumen

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.

Idioma originalEnglish
Número de artículo4541
PublicaciónNature Communications
Volumen5
DOI
EstadoPublished - 29 jul 2014
Publicado de forma externa

All Science Journal Classification (ASJC) codes

  • Química (todo)
  • Bioquímica, genética y biología molecular (todo)
  • Física y astronomía (todo)

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