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Raman spectra of GO, 0.25 g TBT sample (a) and 0.1 g P25 sample (b). The inset shows the D-band and G-band partial Raman spectra ranging from 1250 to 1700 cm−1. Raman spectra of GO (c), 0.25 g TBT sample (d), and 0.1 g P25 sample (e) with the corresponding curve fitted bands.
