Integration of Photosystem I with Graphene Oxide for Photocurrent Enhancement

The time-consuming and challenging preparation of graphene, however, has resulted in the increased interest in graphene oxide (GO). [ 15 ] GO, the oxidized form of graphene, is easily generated through the oxidation and subsequent exfoliation of graphite. The oxygen functional groups enable GO to be dispersed in polar solvents (i.e., water) and further functionalized. However, because the conjugation of the system is disrupted, the conductivity of GO is fi ve orders of magnitude lower than graphite. [ 16 ] To regain conductivity, GO is commonly reduced to generate reduced graphene oxide (RGO). [ 17 ] Both GO and RGO have been incorporated with various materials to develop new functional composites. [ 18,19 ]