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Stage-1 cationic C60 intercalated graphene oxide films.pdf (5.96 MB)
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Stage-1 Cationic C60 Intercalated Graphene Oxide Films

preprint
submitted on 09.09.2020 and posted on 09.09.2020 by Xianjue Chen, Karin Ching, Aditya Rawal, Douglas Lawes, Mohammad Tajiki, William Donald, Sun Hwa Lee, Rodney Ruoff
A “stage-1” intercalated film has been made by the ion exchange of “cationic C60” (pyrrolidinium-functionalised C60, C60(Py)n+) into centimetre-wide, micrometre-thick air-dried graphene oxide (G-O) films composed of tens of thousands of layers of stacked/overlapping G-O platelets, denoted [C60(Py)n+]G-O films. Spontaneous intercalation by ion exchange of one layer of cationic C60 between adjacent G-O layers expands the interlayer spacing of the films from 0.74 nm to 1.46 nm. The films remain intact in water and various organic solvents, which is likely due to a strong affinity between C60(Py)n+ and G-O. Membranes made of the films showed a 6.8 times faster water vapour permeation rate (allowing the vapour to transport through the membrane almost freely) and a 10.5 times faster liquid water permeation rate than G-O membranes. Heating the films at 2000 °C under applied pressure or at 2700 °C without physical confinement converted them into highly graphitised structures.

History

Email Address of Submitting Author

xianjue.chen@unsw.edu.au

Institution

University of New South Wales

Country

Australia

ORCID For Submitting Author

0000-0002-4757-7152

Declaration of Conflict of Interest

The authors declare no competing financial interests.

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