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Nanoscale insights into the structure of solution-processed graphene by x-ray scattering.

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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Yan_2023_2D_Mater._10_015006.pdf - Published Version
Available under License Creative Commons Attribution.


DOI: 10.1088/2053-1583/ac9b6f


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
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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