Yan, ZhengyuGarcía Guimarey, María JesúsParvez, KhaledDun, ChaochaoRead, OliverForrest, ThomasUrban, Jeffrey J.Abdelkader, Amor M.Casiraghi, CinziaMirihanage, Wajira2024-01-302024-01-302022-11-03Zhengyu Yan et al (2023). Nanoscale insights into the structure of solution-processed graphene by x-ray scattering, 2D Mater. 10 015006http://hdl.handle.net/10347/32105Chemical 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.engCC BY 4.0 DEED Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-sa/4.0/Atomic structureX-ray pair distribution functionSolution-processed graphenejournal article10.1088/2053-1583/ac9b6f2053-1583open access