Title: A simple route to graphene oxide frameworks
Authors: Imperiali, Luna
Clasen, Christian
Fransaer, Jan
Macosko, Christopher W.
Vermant, Jan # ×
Issue Date: Jan-2014
Publisher: RSC Publishing
Series Title: Materials Horizons vol:1 issue:1 pages:139-145
Abstract: Lightweight graphene structures have promising applications, for example as separation media, as micro reactor environments, for use in energy storage or in microelectronics. The assembly of graphene or its derivates into such frameworks typically require rather elaborate and expensive methods which are moreover dicult to scale up. In the present work we propose a simpler route which is based on arresting the temperature induced phase separation in a water-lutidine mixture containing graphene oxide particles. The 2D nature of graphene oxide sheets, combined with an adequate surface chemistry simply controlled by their carbon to oxygen ratio, causes them to collect and assemble at the interfaces and create highly elastic layers which arrest the phase separation process. Soft solid graphene oxide frameworks are created which have sucient mechanical stability to allow removal of the solvents by freeze drying. The advantage of the method is that the structure and mesh size of the frameworks can be easily controlled, providing direct access to the graphene-oxide surfaces while creating a mechanically robust and percolating network of graphene oxide tiles. This could be used, for example, as electrodes for supercapacitors or fuel cells.
ISSN: 2051-6347
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Soft Matter, Rheology and Technology Section
Surface and Interface Engineered Materials
× corresponding author
# (joint) last author

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