Uniform Decoration of Reduced Graphene Oxide Sheets with Gold Nanoparticles

Figure 3

C1s XPS spectra of GO (a) and RGO-Au (b). The black solid lines are original spectra; the dash line, dot line and dash, and dot line are assigned to sp²-C, C–O (hydroxyl and epoxy groups), C=O (carboxyl groups), respectively. Au4f XPS spectra for the GO-AuCl₄₋ and RGO-Au nanocomposites: (c) GO-AuCl₄₋ and (d) RGO-Au.

(a)

(b)

(c)

(d)