Yan, Z., Guimarey, M. J. G., Parvez, K., Dun, C., Read, O., Forrest, T., Urban, J. J., Abdelkader, A., Casiraghi, C. and Mirihanage, W., 2022. Nanoscale insights into the structure of solution-processed graphene by x-ray scattering. 2D Materials, 10 (1), 015006.
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Abstract
Chemical exfoliation is an attractive approach for the synthesis of graphene due to its low cost and simplicity. However, challenges still remain in the characterization of solution-processed graphene, in particular with atomic resolution. Through this work we demonstrate the x-ray pair distribution function as a novel approach to study solution-processed graphene or other 2D materials with atomic resolution, directly in solution, produced by liquid-phase and electrochemical exfoliations. The results show the disappearance of long-range atomic correlations, in both cases, confirming the production of single and few-layer graphene. In addition, a considerable ring distortion has been observed as compared to graphite, irrespective of the solvent used: the normal surface angle to the sheet of the powder sample should be less than 6°, compatible with ripples formation observed in suspended graphene. We attribute this effect to the interaction of solvent molecules with the graphene nanosheets.
Item Type: | Article |
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ISSN: | 2053-1583 |
Uncontrolled Keywords: | solution-processed graphene; x-ray pair distribution function; atomic structure |
Group: | Faculty of Science & Technology |
ID Code: | 37830 |
Deposited By: | Symplectic RT2 |
Deposited On: | 21 Nov 2022 15:15 |
Last Modified: | 21 Nov 2022 15:15 |
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