Reducing graphene oxide to produce reduced graphene oxide is an extremely important process as it has a large impact on the quality of the rGO produced and will therefore determine how similar the rGO will be to graphene in terms of structure. When GO is reduced the resulting reduced graphene oxide (rGO) resembles graphene but contains residual oxygen and other heteroatoms, as well as structural defects. rGO shares many of its applications with GO but has some differences.