Tuning the grade of graphene: Gamma ray irradiation of free-standing graphene oxide films in gaseous phase

Preparation of re-constructed carbon nanosheet powders and their efficient lithium-ion storage mechanism

“…The value is close to 30.5°, which indicates that the deionized water cannot wet the surface completely [24][25][26]. Therefore, in the spray drying process, most of spray droplets are volatilized so rapidly that the dried droplets tend to form sheets.…”

Understanding the enhanced electrical properties of free-standing graphene paper: the synergistic effect of iodide adsorption into graphene

“…The region between 1100 and 1250 cm À1 corresponds to the epoxy groups, and was reduced in intensity aer HI treatment, and the peak at 1060 cm À1 is attributed to carboxy or alkoxy functional groups, and varies between the FSG samples, which indicates the reduction of GO paper. [24][25][26] Specically, the peak at 1565 cm À1 that appears aer HI treatment is ascribed to sp 2 carbon and is strongest for FSG2, the sample for which the lowest sheet resistance was observed. 27 In the XRD analysis, the GO peak of the [002] plane shis to higher degrees, namely 24.3 , 24.4 and 24.34 for 0.5, 1 and 24 h HI-treated GO respectively.…”

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“…17 Generally, γ-ray irradiation method illustrating the simultaneous functionalisation and slightly reduction on GO. 25,26,27,28 A certain decrease in the intensity of the bands at ~1717, 1625 and 1060 cm -1 could be related to the evolution of water or labile oxygen chemical groups duringγ-ray irradiation as reported by Anson et al 29 Figure 2: FTIR spectra of (a) GO and functionalised-GOs and (b) ODA (octadecylamine).…”