Preparations, Characterizations, and a Comparative Study on Photovoltaic Performance of Two Different Types of Graphene/TiO₂ Nanocomposites Photoelectrodes

Figure 4

SEM micrographs of GO (a) and rGO (b); the heat treated GO (c); and the heat treated rGO (d).

(a)

(b)

(c)

(d)