Nanoscale insights into the structure of solution-processed graphene by x-ray scattering
Authors: Yan, Z., Guimarey, M.J.G., Parvez, K., Dun, C., Read, O., Forrest, T., Urban, J.J., Abdelkader, A., Casiraghi, C. and Mirihanage, W.
Journal: 2D Materials
Volume: 10
Issue: 1
eISSN: 2053-1583
DOI: 10.1088/2053-1583/ac9b6f
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.
https://eprints.bournemouth.ac.uk/37830/
Source: Scopus
Nanoscale insights into the structure of solution-processed graphene by x-ray scattering
Authors: Yan, Z., Guimarey, M.J.G., Parvez, K., Dun, C., Read, O., Forrest, T., Urban, J.J., Abdelkader, A., Casiraghi, C. and Mirihanage, W.
Journal: 2D MATERIALS
Volume: 10
Issue: 1
ISSN: 2053-1583
DOI: 10.1088/2053-1583/ac9b6f
https://eprints.bournemouth.ac.uk/37830/
Source: Web of Science (Lite)
Nanoscale insights into the structure of solution-processed graphene by x-ray scattering
Authors: Yan, Z., Guimarey, M.J.G., Parvez, K., Dun, C., Read, O., Forrest, T., Urban, J.J., Abdelkader, A., Casiraghi, C. and Mirihanage, W.
Journal: 2D Materials
Volume: 10
Issue: 1
ISSN: 2053-1583
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.
https://eprints.bournemouth.ac.uk/37830/
Source: BURO EPrints