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. 2014 Apr 10;7:1–29. doi: 10.2147/NSA.S40324

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© 2014 Peng et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

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Raman spectra of hydrogenated graphenes.

Notes: Hydrogenated graphenes under (A) a constant temperature of 220°C and pressures of (a) 60; (b) 100; and (c) 150 bar, and (B) under a constant pressure of 100 bar and varying temperatures of (a) 200°C; (b) 350°C; and (c) 500°C. (d) Also shown are Raman spectra of graphite oxide exfoliated in an argon atmosphere. D corresponds to a defect in the sp² lattice while G corresponds to the sp² hybridized carbon. Reproduced from Poh HL, Sanek F, Sofer Z, Pumera M. High-pressure hydrogenation of graphene: towards graphane. Nanoscale. 2012;4:7006–7011,¹²⁶ with permission from of The Royal Society of Chemistry. Copyright © 2012.