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. 2015 Jul 30;5:12734. doi: 10.1038/srep12734

Figure 1. Raman spectra.

Figure 1

(a), Fourier transform infrared analysis spectra (b) and XPS spectra of C element of graphene sheets (c) before and after irradiation (Black, no irradiation; Red, AO; Green, UV; and Blue, EL).