Photocatalytic Activity in Phenol Removal of Water from Graphite and Graphene Oxides: Effect of Degassing and Chemical Oxidation in the Synthesis Process

Figure 4

UV-vis spectra of (a) GO-2, (b) GO-4, (c) GO-6, (d) GEO-2-55, (e) GEO-4-55, (f) GEO-6-55, (g) GEO-2-65, (h) GEO-4-65, and (i) GEO-6-65.