A facile route for graphene oxide (GO) paper production

It is demonstrated that graphene oxide (GO) paper outperforms many other paper-like materials (especially ‘bucky paper’) in stiffness and strength, which can result from the unique interlocking-tile arrangement of the nanoscale GO sheets. This fascinating free-standing paper-like material holds great potentials in many fields, such as protective layers, chemical filters, components of electrical batteries or supercapacitors, adhesive layers, and composite applications, etc.

A facile route for the large scale production of GO papers and their mechanical enhancement has been presented by Zhang et al. The novel paper-like GO made from individual GO sheets in aqueous suspension can be achieved in large scale by a simple solvent-casting method on hydrophobic substrates. Significant enhancement in mechanical stiffness (341%) and fracture strength (234%) of GO paper have been achieved upon modification with a small amount (less than 10 wt%) of glutaraldehyde (GA). The cross-linking reaction takes place between hydroxyl groups on the surface of GO and aldehyde groups of GA, through forming hemiacetal structure, which can result in distinct mechanical enhancement of the GO papers.

You can find out more about their work by reading the article in Nano-Micro Letters which is free to access.

Nantao Hu, Lei Meng, Rungang Gao, Yanyan Wang, Jing Chai, Zhi Yang, Eric Siu-Wai Kong and
Yafei Zhang, “A Facile Route for the Large Scale Fabrication of Graphene Oxide Papers and Their Mechanical
Enhancement by Cross-linking with Glutaraldehyde”, Nano-Micro Lett. 3 (4), 215-222 (2011). http://dx.

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