Zirconia-Nanoparticle-Reinforced Morphology-Engineered Graphene-Based Foams.

Zirconia-Nanoparticle-Reinforced Morphology-Engineered Graphene-Based Foams.

Advanced materials (Deerfield Beach, Fla.) (2015-07-15)

Dibyendu Chakravarty, Chandra Sekhar Tiwary, Leonardo Dantas Machado, Gustavo Brunetto, Soumya Vinod, Ram Manohar Yadav, Douglas S Galvao, Shrikant V Joshi, Govindan Sundararajan, Pulickel M Ajayan

PMID26171602

ABSTRACT

The morphology of graphene-based foams can be engineered by reinforcing them with nanocrystalline zirconia, thus improving their oil-adsorption capacity; This can be observed experimentally and explained theoretically. Low zirconia fractions yield flaky microstructures where zirconia nanoparticles arrest propagating cracks. Higher zirconia concentrations possess a mesh-like interconnected structure where the degree of coiling is dependant on the local zirconia content.

MATERIALS

Product Number

Brand

Product Description

204994

Sigma-Aldrich

Zirconium(IV) oxide, 99.99% trace metals basis (purity excludes ~2% HfO₂)

230693

Sigma-Aldrich

Zirconium(IV) oxide, powder, 5 μm, 99% trace metals basis

643122

Sigma-Aldrich

Zirconium(IV) oxide, nanoparticles, dispersion, <100 nm particle size (BET), 5 wt. % in H₂O

643025

Sigma-Aldrich

Zirconium(IV) oxide, nanoparticles, dispersion, <100 nm particle size (BET), 10 wt. % in H₂O

544760

Sigma-Aldrich

Zirconium(IV) oxide, nanopowder, <100 nm particle size (TEM)