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Highly Controllable and Green Reduction of Graphene Oxide to Flexible Graphene Film with High Streng
Highly Controllable and Green Reduction of Graphene Oxide to Flexible Graphene Film with High Strength
Graphene film with high strength was fabricated by the assembly of graphene sheets derived from graphene oxide (GO) in an effective and environmentally friendly approach....


Highly Controllable and Green Reduction of Graphene Oxide to Flexible Graphene Film with High StrengthSelf-assembly of the as-made CCG sheets results in a flexible CCG film, of which the tensile strength strongly depends on the deoxygenation degree of graphene sheets.

Wubo Wana,Zongbin Zhaoa, ,Han Hua,Yury Gogotsia, b,Jieshan Qiua

a Carbon Research Laboratory, Liaoning Key Lab for Energy Materials and Chemical Engineering, State Key Lab of Fine Chemicals, Dalian University of Technology, Dalian 116024, China

b Department of Materials Science and Engineering, and A.J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, Pennsylvania 19104, USA

Highlights

•Graphene was synthesized by an effective and environmentally friendly approach.
•We introduced a facile X-ray diffraction analysis method to investigate the reduction process from graphene oxide to graphene.
•Flexible graphene films were prepared by self-assembly of the graphene sheets.
•The strength of the graphene films depends on the reduction degree of graphene.

Graphene film with high strength was fabricated by the assembly of graphene sheets derived from graphene oxide (GO) in an effective and environmentally friendly approach.

Highly controllable reduction of GO to chemical converted graphene (CCG) was achieved with sodium citrate as a facile reductant, in which the reduction process was monitored by XRD analysis and UV-vis absorption spectra. Self-assembly of the as-made CCG sheets results in a flexible CCG film.

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