Visible Light-Assisted Photoreduction of Graphene Oxide Using CdS Nanoparticles and Gas Sensing Properties

Figure 6

(a) The change in color of a solution of CdS nanoparticles with GO solution before and after visible-light irradiation, (b) the absorption spectra of graphene oxide and CdS suspension in ethanol, a: before visible-light irradiation, b: after 80 min, and c: after 120 min of visible-light irradiation.

(a)

(b)